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Finding the Fourth Proportional to 81,795.86, 122,568.64 and 55,042.77

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Solution

The fourth proportional to 81,795.86, 122,568.64 and 55,042.77 is: 82,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,795.86 : 122,568.64 = 55,042.77 : x
  2. Step 2: Convert to fraction form
    81,795.86/122,568.64 = 55,042.77/x
  3. Step 3: Cross multiply
    81,795.86x = 122,568.64 × 55,042.77
  4. Step 4: Simplify right side
    81,795.86x = 6,746,517,185.52
  5. Step 5: Solve for x
    x = 6,746,517,185.52/81,795.86
  6. Step 6: Final answer
    x = 82,479.94

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