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Finding the Fourth Proportional to 81,792.20, 122,601.90 and 46,656.20

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Solution

The fourth proportional to 81,792.20, 122,601.90 and 46,656.20 is: 69,935.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,792.20 : 122,601.90 = 46,656.20 : x
  2. Step 2: Convert to fraction form
    81,792.20/122,601.90 = 46,656.20/x
  3. Step 3: Cross multiply
    81,792.20x = 122,601.90 × 46,656.20
  4. Step 4: Simplify right side
    81,792.20x = 5,720,138,766.78
  5. Step 5: Solve for x
    x = 5,720,138,766.78/81,792.20
  6. Step 6: Final answer
    x = 69,935.02

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