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Finding the Fourth Proportional to 159,286.88, 219,780.60 and 92,180

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Solution

The fourth proportional to 159,286.88, 219,780.60 and 92,180 is: 127,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,286.88 : 219,780.60 = 92,180 : x
  2. Step 2: Convert to fraction form
    159,286.88/219,780.60 = 92,180/x
  3. Step 3: Cross multiply
    159,286.88x = 219,780.60 × 92,180
  4. Step 4: Simplify right side
    159,286.88x = 20,259,375,708
  5. Step 5: Solve for x
    x = 20,259,375,708/159,286.88
  6. Step 6: Final answer
    x = 127,187.97

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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.