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Finding the Fourth Proportional to 18,189.52, 25,101.78 and 11,114.44

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Solution

The fourth proportional to 18,189.52, 25,101.78 and 11,114.44 is: 15,338.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.52 : 25,101.78 = 11,114.44 : x
  2. Step 2: Convert to fraction form
    18,189.52/25,101.78 = 11,114.44/x
  3. Step 3: Cross multiply
    18,189.52x = 25,101.78 × 11,114.44
  4. Step 4: Simplify right side
    18,189.52x = 278,992,227.70
  5. Step 5: Solve for x
    x = 278,992,227.70/18,189.52
  6. Step 6: Final answer
    x = 15,338.08

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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.