What are the extremes of the following proportion?
3⁄15 = 12⁄60
a. 12 and 60
b. 3 and 15
c. 15 and 12
d. 3 and 60

The correct answer for the question that is being presented above is this one: "D. 3 and 60." The means of the proportion is 15 and 12. The means-extremes property of proportions allows you to cross multiply, taking the product of the means and setting them equal to the product of the extremes. 

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