Finding the Fourth Proportional to 19,266,128.43, 26,561,537.10 and 15,305,540.91
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Solution
The fourth proportional to 19,266,128.43, 26,561,537.10 and 15,305,540.91 is: 21,101,213.68
Step by Step Solution
- Step 1: Write the proportion equation
19,266,128.43 : 26,561,537.10 = 15,305,540.91 : x - Step 2: Convert to fraction form
19,266,128.43/26,561,537.10 = 15,305,540.91/x - Step 3: Cross multiply
19,266,128.43x = 26,561,537.10 × 15,305,540.91 - Step 4: Simplify right side
19,266,128.43x = 406,538,692,716,532.81 - Step 5: Solve for x
x = 406,538,692,716,532.81/19,266,128.43 - Step 6: Final answer
x = 21,101,213.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.