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Finding the Fourth Proportional to 87,687,700.20, 122,964,334.20 and 87,687,700.20

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Solution

The fourth proportional to 87,687,700.20, 122,964,334.20 and 87,687,700.20 is: 122,964,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687,700.20 : 122,964,334.20 = 87,687,700.20 : x
  2. Step 2: Convert to fraction form
    87,687,700.20/122,964,334.20 = 87,687,700.20/x
  3. Step 3: Cross multiply
    87,687,700.20x = 122,964,334.20 × 87,687,700.20
  4. Step 4: Simplify right side
    87,687,700.20x = 10,782,459,672,622,208
  5. Step 5: Solve for x
    x = 10,782,459,672,622,208/87,687,700.20
  6. Step 6: Final answer
    x = 122,964,334.20

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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.