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Finding the Fourth Proportional to 71,706.87, 107,572.61 and 21,792.01

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Solution

The fourth proportional to 71,706.87, 107,572.61 and 21,792.01 is: 32,691.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,706.87 : 107,572.61 = 21,792.01 : x
  2. Step 2: Convert to fraction form
    71,706.87/107,572.61 = 21,792.01/x
  3. Step 3: Cross multiply
    71,706.87x = 107,572.61 × 21,792.01
  4. Step 4: Simplify right side
    71,706.87x = 2,344,223,560.06
  5. Step 5: Solve for x
    x = 2,344,223,560.06/71,706.87
  6. Step 6: Final answer
    x = 32,691.76

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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.