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Finding the Fourth Proportional to 63,789,840.60, 95,698,757.70 and 20,661,034.20

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Solution

The fourth proportional to 63,789,840.60, 95,698,757.70 and 20,661,034.20 is: 30,996,084.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,789,840.60 : 95,698,757.70 = 20,661,034.20 : x
  2. Step 2: Convert to fraction form
    63,789,840.60/95,698,757.70 = 20,661,034.20/x
  3. Step 3: Cross multiply
    63,789,840.60x = 95,698,757.70 × 20,661,034.20
  4. Step 4: Simplify right side
    63,789,840.60x = 1,977,235,305,737,213.25
  5. Step 5: Solve for x
    x = 1,977,235,305,737,213.25/63,789,840.60
  6. Step 6: Final answer
    x = 30,996,084.75

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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.