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Finding the Fourth Proportional to 109,618.80, 164,428.20 and 75,793.20

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Solution

The fourth proportional to 109,618.80, 164,428.20 and 75,793.20 is: 113,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,618.80 : 164,428.20 = 75,793.20 : x
  2. Step 2: Convert to fraction form
    109,618.80/164,428.20 = 75,793.20/x
  3. Step 3: Cross multiply
    109,618.80x = 164,428.20 × 75,793.20
  4. Step 4: Simplify right side
    109,618.80x = 12,462,539,448.24
  5. Step 5: Solve for x
    x = 12,462,539,448.24/109,618.80
  6. Step 6: Final answer
    x = 113,689.80

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