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Finding the Fourth Proportional to 120,262.56, 165,961.56 and 66,546.56

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Solution

The fourth proportional to 120,262.56, 165,961.56 and 66,546.56 is: 91,833.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,262.56 : 165,961.56 = 66,546.56 : x
  2. Step 2: Convert to fraction form
    120,262.56/165,961.56 = 66,546.56/x
  3. Step 3: Cross multiply
    120,262.56x = 165,961.56 × 66,546.56
  4. Step 4: Simplify right side
    120,262.56x = 11,044,170,910.23
  5. Step 5: Solve for x
    x = 11,044,170,910.23/120,262.56
  6. Step 6: Final answer
    x = 91,833.83

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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.