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Finding the Fourth Proportional to 17,142.15, 25,715.04 and 5,452.65

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Solution

The fourth proportional to 17,142.15, 25,715.04 and 5,452.65 is: 8,179.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,142.15 : 25,715.04 = 5,452.65 : x
  2. Step 2: Convert to fraction form
    17,142.15/25,715.04 = 5,452.65/x
  3. Step 3: Cross multiply
    17,142.15x = 25,715.04 × 5,452.65
  4. Step 4: Simplify right side
    17,142.15x = 140,215,112.86
  5. Step 5: Solve for x
    x = 140,215,112.86/17,142.15
  6. Step 6: Final answer
    x = 8,179.55

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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.