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Finding the Fourth Proportional to 67,248.57, 100,872.86 and 20,501.04

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Solution

The fourth proportional to 67,248.57, 100,872.86 and 20,501.04 is: 30,751.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,248.57 : 100,872.86 = 20,501.04 : x
  2. Step 2: Convert to fraction form
    67,248.57/100,872.86 = 20,501.04/x
  3. Step 3: Cross multiply
    67,248.57x = 100,872.86 × 20,501.04
  4. Step 4: Simplify right side
    67,248.57x = 2,067,998,435.27
  5. Step 5: Solve for x
    x = 2,067,998,435.27/67,248.57
  6. Step 6: Final answer
    x = 30,751.56

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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.