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Finding the Fourth Proportional to 71,680.79, 107,562.64 and 29,553.01

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Solution

The fourth proportional to 71,680.79, 107,562.64 and 29,553.01 is: 44,346.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,680.79 : 107,562.64 = 29,553.01 : x
  2. Step 2: Convert to fraction form
    71,680.79/107,562.64 = 29,553.01/x
  3. Step 3: Cross multiply
    71,680.79x = 107,562.64 × 29,553.01
  4. Step 4: Simplify right side
    71,680.79x = 3,178,799,775.55
  5. Step 5: Solve for x
    x = 3,178,799,775.55/71,680.79
  6. Step 6: Final answer
    x = 44,346.61

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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.