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Finding the Fourth Proportional to 159,799.94, 220,516.43 and 91,768.95

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Solution

The fourth proportional to 159,799.94, 220,516.43 and 91,768.95 is: 126,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,799.94 : 220,516.43 = 91,768.95 : x
  2. Step 2: Convert to fraction form
    159,799.94/220,516.43 = 91,768.95/x
  3. Step 3: Cross multiply
    159,799.94x = 220,516.43 × 91,768.95
  4. Step 4: Simplify right side
    159,799.94x = 20,236,560,780.00
  5. Step 5: Solve for x
    x = 20,236,560,780.00/159,799.94
  6. Step 6: Final answer
    x = 126,636.85

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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.