43 thousand is equal to 43,000. This numerical representation is a straightforward conversion of the word "thousand" to its numeric equivalent, which is 1,000. Therefore, multiplying 43 by 1,000 yields 43,000.

The concept of "thousand" is a base-10 multiplier, meaning it represents a quantity ten times greater than the number it precedes. In the decimal numeral system, which is the most widely used numeral system in the world, including the United States, the value of "thousand" is consistently 1,000. This is due to the system's structure, where each place value is ten times the value to its right. For instance, in the number 2,000, the "thousand" place is ten times the "hundred" place, and the "hundred" place is ten times the "ten" place.

Historically, the use of the "thousand" as a unit of measurement has been influenced by various factors, including trade, commerce, and the need for standardized measures. For example, the ancient Romans used a system where the "thousand" was a significant unit of currency. Over time, this usage has been adopted and standardized globally, including in the United States.

Data from the United States Census Bureau and other statistical organizations often use the "thousand" as a unit of measure to simplify large numbers. For instance, when reporting population figures or economic data, using "thousand" can make the numbers more manageable and easier to understand. This practice is consistent with the international standard for numerical representation.

In conclusion, 43 thousand is a simple conversion of the word "thousand" to its numeric equivalent, 43,000, based on the decimal numeral system's structure and the historical use of the "thousand" as a unit of measure.