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Finding the Fourth Proportional to 95,561.71, 142,731.48 and 86,542.39

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Solution

The fourth proportional to 95,561.71, 142,731.48 and 86,542.39 is: 129,260.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,561.71 : 142,731.48 = 86,542.39 : x
  2. Step 2: Convert to fraction form
    95,561.71/142,731.48 = 86,542.39/x
  3. Step 3: Cross multiply
    95,561.71x = 142,731.48 × 86,542.39
  4. Step 4: Simplify right side
    95,561.71x = 12,352,323,407.44
  5. Step 5: Solve for x
    x = 12,352,323,407.44/95,561.71
  6. Step 6: Final answer
    x = 129,260.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.