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Finding the Fourth Proportional to 113,197.11, 169,356.65 and 81,679.74

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Solution

The fourth proportional to 113,197.11, 169,356.65 and 81,679.74 is: 122,202.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,197.11 : 169,356.65 = 81,679.74 : x
  2. Step 2: Convert to fraction form
    113,197.11/169,356.65 = 81,679.74/x
  3. Step 3: Cross multiply
    113,197.11x = 169,356.65 × 81,679.74
  4. Step 4: Simplify right side
    113,197.11x = 13,833,006,730.87
  5. Step 5: Solve for x
    x = 13,833,006,730.87/113,197.11
  6. Step 6: Final answer
    x = 122,202.83

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