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Finding the Fourth Proportional to 67,471.76, 93,103.96 and 39,171.92

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Solution

The fourth proportional to 67,471.76, 93,103.96 and 39,171.92 is: 54,053.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,471.76 : 93,103.96 = 39,171.92 : x
  2. Step 2: Convert to fraction form
    67,471.76/93,103.96 = 39,171.92/x
  3. Step 3: Cross multiply
    67,471.76x = 93,103.96 × 39,171.92
  4. Step 4: Simplify right side
    67,471.76x = 3,647,060,872.80
  5. Step 5: Solve for x
    x = 3,647,060,872.80/67,471.76
  6. Step 6: Final answer
    x = 54,053.15

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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.