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Finding the Fourth Proportional to 106,672.80, 160,138.80 and 80,169.60

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Solution

The fourth proportional to 106,672.80, 160,138.80 and 80,169.60 is: 120,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,672.80 : 160,138.80 = 80,169.60 : x
  2. Step 2: Convert to fraction form
    106,672.80/160,138.80 = 80,169.60/x
  3. Step 3: Cross multiply
    106,672.80x = 160,138.80 × 80,169.60
  4. Step 4: Simplify right side
    106,672.80x = 12,838,263,540.48
  5. Step 5: Solve for x
    x = 12,838,263,540.48/106,672.80
  6. Step 6: Final answer
    x = 120,351.80

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