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Finding the Fourth Proportional to 83,919.85, 115,750.42 and 55,230.32

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Solution

The fourth proportional to 83,919.85, 115,750.42 and 55,230.32 is: 76,179.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,919.85 : 115,750.42 = 55,230.32 : x
  2. Step 2: Convert to fraction form
    83,919.85/115,750.42 = 55,230.32/x
  3. Step 3: Cross multiply
    83,919.85x = 115,750.42 × 55,230.32
  4. Step 4: Simplify right side
    83,919.85x = 6,392,932,888.03
  5. Step 5: Solve for x
    x = 6,392,932,888.03/83,919.85
  6. Step 6: Final answer
    x = 76,179.03

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