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Finding the Fourth Proportional to 12,481.44, 18,722.16 and 5,084.16

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Solution

The fourth proportional to 12,481.44, 18,722.16 and 5,084.16 is: 7,626.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.44 : 18,722.16 = 5,084.16 : x
  2. Step 2: Convert to fraction form
    12,481.44/18,722.16 = 5,084.16/x
  3. Step 3: Cross multiply
    12,481.44x = 18,722.16 × 5,084.16
  4. Step 4: Simplify right side
    12,481.44x = 95,186,456.99
  5. Step 5: Solve for x
    x = 95,186,456.99/12,481.44
  6. Step 6: Final answer
    x = 7,626.24

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Similar ratio
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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.