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Finding the Fourth Proportional to 20,793.62, 31,164.15 and 9,092.90

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Solution

The fourth proportional to 20,793.62, 31,164.15 and 9,092.90 is: 13,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.62 : 31,164.15 = 9,092.90 : x
  2. Step 2: Convert to fraction form
    20,793.62/31,164.15 = 9,092.90/x
  3. Step 3: Cross multiply
    20,793.62x = 31,164.15 × 9,092.90
  4. Step 4: Simplify right side
    20,793.62x = 283,372,499.54
  5. Step 5: Solve for x
    x = 283,372,499.54/20,793.62
  6. Step 6: Final answer
    x = 13,627.86

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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.