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Finding the Fourth Proportional to 444,942.40, 667,348.80 and 129,366.40

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Solution

The fourth proportional to 444,942.40, 667,348.80 and 129,366.40 is: 194,030.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,942.40 : 667,348.80 = 129,366.40 : x
  2. Step 2: Convert to fraction form
    444,942.40/667,348.80 = 129,366.40/x
  3. Step 3: Cross multiply
    444,942.40x = 667,348.80 × 129,366.40
  4. Step 4: Simplify right side
    444,942.40x = 86,332,511,800.32
  5. Step 5: Solve for x
    x = 86,332,511,800.32/444,942.40
  6. Step 6: Final answer
    x = 194,030.76

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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.