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Finding the Fourth Proportional to 83,920.60, 125,765.70 and 68,368.60

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Solution

The fourth proportional to 83,920.60, 125,765.70 and 68,368.60 is: 102,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,920.60 : 125,765.70 = 68,368.60 : x
  2. Step 2: Convert to fraction form
    83,920.60/125,765.70 = 68,368.60/x
  3. Step 3: Cross multiply
    83,920.60x = 125,765.70 × 68,368.60
  4. Step 4: Simplify right side
    83,920.60x = 8,598,424,837.02
  5. Step 5: Solve for x
    x = 8,598,424,837.02/83,920.60
  6. Step 6: Final answer
    x = 102,459.05

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