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Finding the Fourth Proportional to 6,616.20, 9,924.30 and 6,324.60

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Solution

The fourth proportional to 6,616.20, 9,924.30 and 6,324.60 is: 9,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.20 : 9,924.30 = 6,324.60 : x
  2. Step 2: Convert to fraction form
    6,616.20/9,924.30 = 6,324.60/x
  3. Step 3: Cross multiply
    6,616.20x = 9,924.30 × 6,324.60
  4. Step 4: Simplify right side
    6,616.20x = 62,767,227.78
  5. Step 5: Solve for x
    x = 62,767,227.78/6,616.20
  6. Step 6: Final answer
    x = 9,486.90

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Half 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.