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Finding the Fourth Proportional to 67,672.75, 93,366.92 and 39,372.97

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Solution

The fourth proportional to 67,672.75, 93,366.92 and 39,372.97 is: 54,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,672.75 : 93,366.92 = 39,372.97 : x
  2. Step 2: Convert to fraction form
    67,672.75/93,366.92 = 39,372.97/x
  3. Step 3: Cross multiply
    67,672.75x = 93,366.92 × 39,372.97
  4. Step 4: Simplify right side
    67,672.75x = 3,676,132,940.15
  5. Step 5: Solve for x
    x = 3,676,132,940.15/67,672.75
  6. Step 6: Final answer
    x = 54,322.20

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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.