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Finding the Fourth Proportional to 118,170.40, 177,255.60 and 80,845.60

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Solution

The fourth proportional to 118,170.40, 177,255.60 and 80,845.60 is: 121,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,170.40 : 177,255.60 = 80,845.60 : x
  2. Step 2: Convert to fraction form
    118,170.40/177,255.60 = 80,845.60/x
  3. Step 3: Cross multiply
    118,170.40x = 177,255.60 × 80,845.60
  4. Step 4: Simplify right side
    118,170.40x = 14,330,335,335.36
  5. Step 5: Solve for x
    x = 14,330,335,335.36/118,170.40
  6. Step 6: Final answer
    x = 121,268.40

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