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Finding the Fourth Proportional to 18,808.74, 25,961.31 and 18,524.43

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Solution

The fourth proportional to 18,808.74, 25,961.31 and 18,524.43 is: 25,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.74 : 25,961.31 = 18,524.43 : x
  2. Step 2: Convert to fraction form
    18,808.74/25,961.31 = 18,524.43/x
  3. Step 3: Cross multiply
    18,808.74x = 25,961.31 × 18,524.43
  4. Step 4: Simplify right side
    18,808.74x = 480,918,469.80
  5. Step 5: Solve for x
    x = 480,918,469.80/18,808.74
  6. Step 6: Final answer
    x = 25,568.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.