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Finding the Fourth Proportional to 83,891.79, 115,775.46 and 48,087.78

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Solution

The fourth proportional to 83,891.79, 115,775.46 and 48,087.78 is: 66,363.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,891.79 : 115,775.46 = 48,087.78 : x
  2. Step 2: Convert to fraction form
    83,891.79/115,775.46 = 48,087.78/x
  3. Step 3: Cross multiply
    83,891.79x = 115,775.46 × 48,087.78
  4. Step 4: Simplify right side
    83,891.79x = 5,567,384,849.88
  5. Step 5: Solve for x
    x = 5,567,384,849.88/83,891.79
  6. Step 6: Final answer
    x = 66,363.88

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