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Finding the Fourth Proportional to 107,932.40, 161,725.80 and 68,418.80

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Solution

The fourth proportional to 107,932.40, 161,725.80 and 68,418.80 is: 102,518.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,932.40 : 161,725.80 = 68,418.80 : x
  2. Step 2: Convert to fraction form
    107,932.40/161,725.80 = 68,418.80/x
  3. Step 3: Cross multiply
    107,932.40x = 161,725.80 × 68,418.80
  4. Step 4: Simplify right side
    107,932.40x = 11,065,085,165.04
  5. Step 5: Solve for x
    x = 11,065,085,165.04/107,932.40
  6. Step 6: Final answer
    x = 102,518.66

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