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Finding the Fourth Proportional to 115,912.76, 159,951.84 and 64,226.39

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Solution

The fourth proportional to 115,912.76, 159,951.84 and 64,226.39 is: 88,628.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,912.76 : 159,951.84 = 64,226.39 : x
  2. Step 2: Convert to fraction form
    115,912.76/159,951.84 = 64,226.39/x
  3. Step 3: Cross multiply
    115,912.76x = 159,951.84 × 64,226.39
  4. Step 4: Simplify right side
    115,912.76x = 10,273,129,257.06
  5. Step 5: Solve for x
    x = 10,273,129,257.06/115,912.76
  6. Step 6: Final answer
    x = 88,628.11

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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.