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Finding the Fourth Proportional to 13,793.97, 20,691.14 and 3,933.24

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Solution

The fourth proportional to 13,793.97, 20,691.14 and 3,933.24 is: 5,899.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.97 : 20,691.14 = 3,933.24 : x
  2. Step 2: Convert to fraction form
    13,793.97/20,691.14 = 3,933.24/x
  3. Step 3: Cross multiply
    13,793.97x = 20,691.14 × 3,933.24
  4. Step 4: Simplify right side
    13,793.97x = 81,383,219.49
  5. Step 5: Solve for x
    x = 81,383,219.49/13,793.97
  6. Step 6: Final answer
    x = 5,899.91

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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.