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Finding the Fourth Proportional to 18,649.44, 27,974.16 and 14,217.12

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Solution

The fourth proportional to 18,649.44, 27,974.16 and 14,217.12 is: 21,325.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.44 : 27,974.16 = 14,217.12 : x
  2. Step 2: Convert to fraction form
    18,649.44/27,974.16 = 14,217.12/x
  3. Step 3: Cross multiply
    18,649.44x = 27,974.16 × 14,217.12
  4. Step 4: Simplify right side
    18,649.44x = 397,711,989.62
  5. Step 5: Solve for x
    x = 397,711,989.62/18,649.44
  6. Step 6: Final answer
    x = 21,325.68

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Half scale
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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.