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Finding the Fourth Proportional to 18,221.01, 27,331.52 and 5,742.96

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Solution

The fourth proportional to 18,221.01, 27,331.52 and 5,742.96 is: 8,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.01 : 27,331.52 = 5,742.96 : x
  2. Step 2: Convert to fraction form
    18,221.01/27,331.52 = 5,742.96/x
  3. Step 3: Cross multiply
    18,221.01x = 27,331.52 × 5,742.96
  4. Step 4: Simplify right side
    18,221.01x = 156,963,797.38
  5. Step 5: Solve for x
    x = 156,963,797.38/18,221.01
  6. Step 6: Final answer
    x = 8,614.44

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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.