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Finding the Fourth Proportional to 396,100.40, 593,344.20 and 245,879.60

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Solution

The fourth proportional to 396,100.40, 593,344.20 and 245,879.60 is: 368,318.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,100.40 : 593,344.20 = 245,879.60 : x
  2. Step 2: Convert to fraction form
    396,100.40/593,344.20 = 245,879.60/x
  3. Step 3: Cross multiply
    396,100.40x = 593,344.20 × 245,879.60
  4. Step 4: Simplify right side
    396,100.40x = 145,891,234,558.32
  5. Step 5: Solve for x
    x = 145,891,234,558.32/396,100.40
  6. Step 6: Final answer
    x = 368,318.83

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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.