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Finding the Fourth Proportional to 92,339,246.40, 138,508,869.60 and 88,812,052.80

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Solution

The fourth proportional to 92,339,246.40, 138,508,869.60 and 88,812,052.80 is: 133,218,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,339,246.40 : 138,508,869.60 = 88,812,052.80 : x
  2. Step 2: Convert to fraction form
    92,339,246.40/138,508,869.60 = 88,812,052.80/x
  3. Step 3: Cross multiply
    92,339,246.40x = 138,508,869.60 × 88,812,052.80
  4. Step 4: Simplify right side
    92,339,246.40x = 12,301,257,040,183,514
  5. Step 5: Solve for x
    x = 12,301,257,040,183,514/92,339,246.40
  6. Step 6: Final answer
    x = 133,218,079.20

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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.