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Finding the Fourth Proportional to 113,880.80, 170,821.20 and 108,437.60

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Solution

The fourth proportional to 113,880.80, 170,821.20 and 108,437.60 is: 162,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,880.80 : 170,821.20 = 108,437.60 : x
  2. Step 2: Convert to fraction form
    113,880.80/170,821.20 = 108,437.60/x
  3. Step 3: Cross multiply
    113,880.80x = 170,821.20 × 108,437.60
  4. Step 4: Simplify right side
    113,880.80x = 18,523,440,957.12
  5. Step 5: Solve for x
    x = 18,523,440,957.12/113,880.80
  6. Step 6: Final answer
    x = 162,656.40

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