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Finding the Fourth Proportional to 12,449.59, 18,674.38 and 4,553.15

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Solution

The fourth proportional to 12,449.59, 18,674.38 and 4,553.15 is: 6,829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.59 : 18,674.38 = 4,553.15 : x
  2. Step 2: Convert to fraction form
    12,449.59/18,674.38 = 4,553.15/x
  3. Step 3: Cross multiply
    12,449.59x = 18,674.38 × 4,553.15
  4. Step 4: Simplify right side
    12,449.59x = 85,027,253.30
  5. Step 5: Solve for x
    x = 85,027,253.30/12,449.59
  6. Step 6: Final answer
    x = 6,829.72

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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.