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Finding the Fourth Proportional to 71,929.20, 107,901.90 and 22,008.90

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Solution

The fourth proportional to 71,929.20, 107,901.90 and 22,008.90 is: 33,015.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,929.20 : 107,901.90 = 22,008.90 : x
  2. Step 2: Convert to fraction form
    71,929.20/107,901.90 = 22,008.90/x
  3. Step 3: Cross multiply
    71,929.20x = 107,901.90 × 22,008.90
  4. Step 4: Simplify right side
    71,929.20x = 2,374,802,126.91
  5. Step 5: Solve for x
    x = 2,374,802,126.91/71,929.20
  6. Step 6: Final answer
    x = 33,015.83

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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.