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Finding the Fourth Proportional to 87,687,068.60, 131,530,602.90 and 87,687,068.60

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Solution

The fourth proportional to 87,687,068.60, 131,530,602.90 and 87,687,068.60 is: 131,530,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687,068.60 : 131,530,602.90 = 87,687,068.60 : x
  2. Step 2: Convert to fraction form
    87,687,068.60/131,530,602.90 = 87,687,068.60/x
  3. Step 3: Cross multiply
    87,687,068.60x = 131,530,602.90 × 87,687,068.60
  4. Step 4: Simplify right side
    87,687,068.60x = 11,533,532,999,491,658
  5. Step 5: Solve for x
    x = 11,533,532,999,491,658/87,687,068.60
  6. Step 6: Final answer
    x = 131,530,602.90

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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.