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Finding the Fourth Proportional to 444,921.90, 667,318.05 and 129,345.90

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Solution

The fourth proportional to 444,921.90, 667,318.05 and 129,345.90 is: 194,000.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,921.90 : 667,318.05 = 129,345.90 : x
  2. Step 2: Convert to fraction form
    444,921.90/667,318.05 = 129,345.90/x
  3. Step 3: Cross multiply
    444,921.90x = 667,318.05 × 129,345.90
  4. Step 4: Simplify right side
    444,921.90x = 86,314,853,763.50
  5. Step 5: Solve for x
    x = 86,314,853,763.50/444,921.90
  6. Step 6: Final answer
    x = 194,000.01

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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.