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Finding the Fourth Proportional to 8,874.75, 12,247.17 and 5,148.75

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Solution

The fourth proportional to 8,874.75, 12,247.17 and 5,148.75 is: 7,105.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,874.75 : 12,247.17 = 5,148.75 : x
  2. Step 2: Convert to fraction form
    8,874.75/12,247.17 = 5,148.75/x
  3. Step 3: Cross multiply
    8,874.75x = 12,247.17 × 5,148.75
  4. Step 4: Simplify right side
    8,874.75x = 63,057,616.54
  5. Step 5: Solve for x
    x = 63,057,616.54/8,874.75
  6. Step 6: Final answer
    x = 7,105.28

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.