Final answer:
To find 152.1% of 442.7, multiply 442.7 by 1.521 and round the result to the nearest thousandth.
Step-by-step explanation:
To find 152.1% of 442.7, we can multiply 442.7 by 1.521. The result is 673.8467.
Since we need to round to the nearest thousandth, we look at the number in the thousandths place, which is 6. The digit to the right of 6 is 7, so we round up to 674.000.
Therefore, 152.1% of 442.7, rounded to the nearest thousandth, is 674.000.