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Finding the Fourth Proportional to 87,687,601.70, 122,964,196.30 and 87,687,601.70

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Solution

The fourth proportional to 87,687,601.70, 122,964,196.30 and 87,687,601.70 is: 122,964,196.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687,601.70 : 122,964,196.30 = 87,687,601.70 : x
  2. Step 2: Convert to fraction form
    87,687,601.70/122,964,196.30 = 87,687,601.70/x
  3. Step 3: Cross multiply
    87,687,601.70x = 122,964,196.30 × 87,687,601.70
  4. Step 4: Simplify right side
    87,687,601.70x = 10,782,435,468,515,014
  5. Step 5: Solve for x
    x = 10,782,435,468,515,014/87,687,601.70
  6. Step 6: Final answer
    x = 122,964,196.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.