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Finding the Fourth Proportional to 396,096.80, 594,231.60 and 115,591.20

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Solution

The fourth proportional to 396,096.80, 594,231.60 and 115,591.20 is: 173,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,096.80 : 594,231.60 = 115,591.20 : x
  2. Step 2: Convert to fraction form
    396,096.80/594,231.60 = 115,591.20/x
  3. Step 3: Cross multiply
    396,096.80x = 594,231.60 × 115,591.20
  4. Step 4: Simplify right side
    396,096.80x = 68,687,943,721.92
  5. Step 5: Solve for x
    x = 68,687,943,721.92/396,096.80
  6. Step 6: Final answer
    x = 173,412.01

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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.