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Finding the Fourth Proportional to 664,379.20, 996,572.22 and 165,743.20

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Solution

The fourth proportional to 664,379.20, 996,572.22 and 165,743.20 is: 248,615.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,379.20 : 996,572.22 = 165,743.20 : x
  2. Step 2: Convert to fraction form
    664,379.20/996,572.22 = 165,743.20/x
  3. Step 3: Cross multiply
    664,379.20x = 996,572.22 × 165,743.20
  4. Step 4: Simplify right side
    664,379.20x = 165,175,068,773.90
  5. Step 5: Solve for x
    x = 165,175,068,773.90/664,379.20
  6. Step 6: Final answer
    x = 248,615.65

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Similar ratio
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1.5x scale

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.