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Finding the Fourth Proportional to 80,213.44, 120,319.60 and 62,698

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Solution

The fourth proportional to 80,213.44, 120,319.60 and 62,698 is: 94,046.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,213.44 : 120,319.60 = 62,698 : x
  2. Step 2: Convert to fraction form
    80,213.44/120,319.60 = 62,698/x
  3. Step 3: Cross multiply
    80,213.44x = 120,319.60 × 62,698
  4. Step 4: Simplify right side
    80,213.44x = 7,543,798,280.80
  5. Step 5: Solve for x
    x = 7,543,798,280.80/80,213.44
  6. Step 6: Final answer
    x = 94,046.56

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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.