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Finding the Fourth Proportional to 6,614.48, 9,921.72 and 5,154.73

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Solution

The fourth proportional to 6,614.48, 9,921.72 and 5,154.73 is: 7,732.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,614.48 : 9,921.72 = 5,154.73 : x
  2. Step 2: Convert to fraction form
    6,614.48/9,921.72 = 5,154.73/x
  3. Step 3: Cross multiply
    6,614.48x = 9,921.72 × 5,154.73
  4. Step 4: Simplify right side
    6,614.48x = 51,143,787.74
  5. Step 5: Solve for x
    x = 51,143,787.74/6,614.48
  6. Step 6: Final answer
    x = 7,732.10

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Double scale
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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.