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Finding the Fourth Proportional to 20,593.89, 30,890.84 and 7,445.97

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Solution

The fourth proportional to 20,593.89, 30,890.84 and 7,445.97 is: 11,168.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.89 : 30,890.84 = 7,445.97 : x
  2. Step 2: Convert to fraction form
    20,593.89/30,890.84 = 7,445.97/x
  3. Step 3: Cross multiply
    20,593.89x = 30,890.84 × 7,445.97
  4. Step 4: Simplify right side
    20,593.89x = 230,012,230.68
  5. Step 5: Solve for x
    x = 230,012,230.68/20,593.89
  6. Step 6: Final answer
    x = 11,168.96

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Double scale
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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.