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Finding the Fourth Proportional to 15,203,691.01, 20,981,432.39 and 8,677,189.57

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Solution

The fourth proportional to 15,203,691.01, 20,981,432.39 and 8,677,189.57 is: 11,974,714.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,203,691.01 : 20,981,432.39 = 8,677,189.57 : x
  2. Step 2: Convert to fraction form
    15,203,691.01/20,981,432.39 = 8,677,189.57/x
  3. Step 3: Cross multiply
    15,203,691.01x = 20,981,432.39 × 8,677,189.57
  4. Step 4: Simplify right side
    15,203,691.01x = 182,059,866,182,414.53
  5. Step 5: Solve for x
    x = 182,059,866,182,414.53/15,203,691.01
  6. Step 6: Final answer
    x = 11,974,714.96

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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.