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Finding the Fourth Proportional to 18,439.31, 27,659.07 and 4,588.31

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Solution

The fourth proportional to 18,439.31, 27,659.07 and 4,588.31 is: 6,882.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.31 : 27,659.07 = 4,588.31 : x
  2. Step 2: Convert to fraction form
    18,439.31/27,659.07 = 4,588.31/x
  3. Step 3: Cross multiply
    18,439.31x = 27,659.07 × 4,588.31
  4. Step 4: Simplify right side
    18,439.31x = 126,908,456.62
  5. Step 5: Solve for x
    x = 126,908,456.62/18,439.31
  6. Step 6: Final answer
    x = 6,882.49

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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.