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Finding the Fourth Proportional to 108,640.20, 163,033.20 and 64,219.80

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Solution

The fourth proportional to 108,640.20, 163,033.20 and 64,219.80 is: 96,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,640.20 : 163,033.20 = 64,219.80 : x
  2. Step 2: Convert to fraction form
    108,640.20/163,033.20 = 64,219.80/x
  3. Step 3: Cross multiply
    108,640.20x = 163,033.20 × 64,219.80
  4. Step 4: Simplify right side
    108,640.20x = 10,469,959,497.36
  5. Step 5: Solve for x
    x = 10,469,959,497.36/108,640.20
  6. Step 6: Final answer
    x = 96,372.79

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