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Finding the Fourth Proportional to 444,648.60, 667,059.30 and 129,115.80

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Solution

The fourth proportional to 444,648.60, 667,059.30 and 129,115.80 is: 193,698.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,648.60 : 667,059.30 = 129,115.80 : x
  2. Step 2: Convert to fraction form
    444,648.60/667,059.30 = 129,115.80/x
  3. Step 3: Cross multiply
    444,648.60x = 667,059.30 × 129,115.80
  4. Step 4: Simplify right side
    444,648.60x = 86,127,895,166.94
  5. Step 5: Solve for x
    x = 86,127,895,166.94/444,648.60
  6. Step 6: Final answer
    x = 193,698.79

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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.