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Finding the Fourth Proportional to 92,306.38, 138,748.59 and 60,918.15

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Solution

The fourth proportional to 92,306.38, 138,748.59 and 60,918.15 is: 91,567.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,306.38 : 138,748.59 = 60,918.15 : x
  2. Step 2: Convert to fraction form
    92,306.38/138,748.59 = 60,918.15/x
  3. Step 3: Cross multiply
    92,306.38x = 138,748.59 × 60,918.15
  4. Step 4: Simplify right side
    92,306.38x = 8,452,307,417.91
  5. Step 5: Solve for x
    x = 8,452,307,417.91/92,306.38
  6. Step 6: Final answer
    x = 91,567.97

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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.