Find the fourth proportion of the following numbers. \(\frac{1}{3}\) of 6, \(\frac{4}{5}\) of 15, \(\frac{3}{7}\) of 21.
54
The correct answer is 54.
Property of Proportion: In a proportion, the product of the extremes is equal to the product of the means. That is, if a:b = c:d, then ad = bc. This property is crucial for solving problems involving proportions, including finding the fourth proportion or any other missing term. Understanding how to work with ratios and proportions is essential for many types of mathematical problems.
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