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Finding the Fourth Proportional to 67,171.72, 100,691.82 and 25,020.88

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Solution

The fourth proportional to 67,171.72, 100,691.82 and 25,020.88 is: 37,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,171.72 : 100,691.82 = 25,020.88 : x
  2. Step 2: Convert to fraction form
    67,171.72/100,691.82 = 25,020.88/x
  3. Step 3: Cross multiply
    67,171.72x = 100,691.82 × 25,020.88
  4. Step 4: Simplify right side
    67,171.72x = 2,519,397,945.20
  5. Step 5: Solve for x
    x = 2,519,397,945.20/67,171.72
  6. Step 6: Final answer
    x = 37,506.82

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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.