To convert kilograms to pounds using the given proportion, we can set up the following equation:
1 kilogram = 2.2 pounds
To find how many kilograms are equal to 72 pounds, we can set up the proportion:
x kilograms = 72 pounds
Using the given proportion, we can set up the equation:
x/1 = 72/2.2
Now we can solve for x by cross-multiplying:
2.2x = 72
Dividing both sides by 2.2, we get:
x = 72/2.2
x ≈ 32.7
Therefore, the number of kilograms equal to 72 pounds, rounded to the nearest tenth of a kilogram, is 32.7.
The correct answer is D. 32.7.