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Finding the Fourth Proportional to 444,945.90, 667,354.05 and 129,369.90

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Solution

The fourth proportional to 444,945.90, 667,354.05 and 129,369.90 is: 194,036.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,945.90 : 667,354.05 = 129,369.90 : x
  2. Step 2: Convert to fraction form
    444,945.90/667,354.05 = 129,369.90/x
  3. Step 3: Cross multiply
    444,945.90x = 667,354.05 × 129,369.90
  4. Step 4: Simplify right side
    444,945.90x = 86,335,526,713.10
  5. Step 5: Solve for x
    x = 86,335,526,713.10/444,945.90
  6. Step 6: Final answer
    x = 194,036.01

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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.