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Finding the Fourth Proportional to 18,453.60, 25,469.46 and 11,557.97

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Solution

The fourth proportional to 18,453.60, 25,469.46 and 11,557.97 is: 15,952.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.60 : 25,469.46 = 11,557.97 : x
  2. Step 2: Convert to fraction form
    18,453.60/25,469.46 = 11,557.97/x
  3. Step 3: Cross multiply
    18,453.60x = 25,469.46 × 11,557.97
  4. Step 4: Simplify right side
    18,453.60x = 294,375,127.25
  5. Step 5: Solve for x
    x = 294,375,127.25/18,453.60
  6. Step 6: Final answer
    x = 15,952.18

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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.