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Finding the Fourth Proportional to 69,314.57, 95,630.62 and 56,545.68

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Solution

The fourth proportional to 69,314.57, 95,630.62 and 56,545.68 is: 78,013.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,314.57 : 95,630.62 = 56,545.68 : x
  2. Step 2: Convert to fraction form
    69,314.57/95,630.62 = 56,545.68/x
  3. Step 3: Cross multiply
    69,314.57x = 95,630.62 × 56,545.68
  4. Step 4: Simplify right side
    69,314.57x = 5,407,498,585.76
  5. Step 5: Solve for x
    x = 5,407,498,585.76/69,314.57
  6. Step 6: Final answer
    x = 78,013.88

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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.