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Finding the Fourth Proportional to 396,388.60, 594,580.68 and 96,870.76

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Solution

The fourth proportional to 396,388.60, 594,580.68 and 96,870.76 is: 145,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,388.60 : 594,580.68 = 96,870.76 : x
  2. Step 2: Convert to fraction form
    396,388.60/594,580.68 = 96,870.76/x
  3. Step 3: Cross multiply
    396,388.60x = 594,580.68 × 96,870.76
  4. Step 4: Simplify right side
    396,388.60x = 57,597,482,352.92
  5. Step 5: Solve for x
    x = 57,597,482,352.92/396,388.60
  6. Step 6: Final answer
    x = 145,305.60

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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.