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Finding the Fourth Proportional to 396,074.40, 594,403.20 and 159,586.80

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Solution

The fourth proportional to 396,074.40, 594,403.20 and 159,586.80 is: 239,497.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,074.40 : 594,403.20 = 159,586.80 : x
  2. Step 2: Convert to fraction form
    396,074.40/594,403.20 = 159,586.80/x
  3. Step 3: Cross multiply
    396,074.40x = 594,403.20 × 159,586.80
  4. Step 4: Simplify right side
    396,074.40x = 94,858,904,597.76
  5. Step 5: Solve for x
    x = 94,858,904,597.76/396,074.40
  6. Step 6: Final answer
    x = 239,497.69

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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.