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Finding the Fourth Proportional to 71,403.92, 107,081.17 and 29,272.04

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Solution

The fourth proportional to 71,403.92, 107,081.17 and 29,272.04 is: 43,897.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.92 : 107,081.17 = 29,272.04 : x
  2. Step 2: Convert to fraction form
    71,403.92/107,081.17 = 29,272.04/x
  3. Step 3: Cross multiply
    71,403.92x = 107,081.17 × 29,272.04
  4. Step 4: Simplify right side
    71,403.92x = 3,134,484,291.49
  5. Step 5: Solve for x
    x = 3,134,484,291.49/71,403.92
  6. Step 6: Final answer
    x = 43,897.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.