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Finding the Fourth Proportional to 71,929.76, 99,272.68 and 41,314.88

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Solution

The fourth proportional to 71,929.76, 99,272.68 and 41,314.88 is: 57,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,929.76 : 99,272.68 = 41,314.88 : x
  2. Step 2: Convert to fraction form
    71,929.76/99,272.68 = 41,314.88/x
  3. Step 3: Cross multiply
    71,929.76x = 99,272.68 × 41,314.88
  4. Step 4: Simplify right side
    71,929.76x = 4,101,438,861.48
  5. Step 5: Solve for x
    x = 4,101,438,861.48/71,929.76
  6. Step 6: Final answer
    x = 57,020.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.