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Finding the Fourth Proportional to 76,687,796.60, 115,031,694.90 and 59,555,713.40

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Solution

The fourth proportional to 76,687,796.60, 115,031,694.90 and 59,555,713.40 is: 89,333,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,687,796.60 : 115,031,694.90 = 59,555,713.40 : x
  2. Step 2: Convert to fraction form
    76,687,796.60/115,031,694.90 = 59,555,713.40/x
  3. Step 3: Cross multiply
    76,687,796.60x = 115,031,694.90 × 59,555,713.40
  4. Step 4: Simplify right side
    76,687,796.60x = 6,850,794,653,380,642
  5. Step 5: Solve for x
    x = 6,850,794,653,380,642/76,687,796.60
  6. Step 6: Final answer
    x = 89,333,570.10

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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.