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Finding the Fourth Proportional to 87,408,059.90, 130,860,147.45 and 87,408,059.90

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Solution

The fourth proportional to 87,408,059.90, 130,860,147.45 and 87,408,059.90 is: 130,860,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,408,059.90 : 130,860,147.45 = 87,408,059.90 : x
  2. Step 2: Convert to fraction form
    87,408,059.90/130,860,147.45 = 87,408,059.90/x
  3. Step 3: Cross multiply
    87,408,059.90x = 130,860,147.45 × 87,408,059.90
  4. Step 4: Simplify right side
    87,408,059.90x = 11,438,231,606,832,434
  5. Step 5: Solve for x
    x = 11,438,231,606,832,434/87,408,059.90
  6. Step 6: Final answer
    x = 130,860,147.45

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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.