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Finding the Fourth Proportional to 27,309.60, 40,976.64 and 13,261.92

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Solution

The fourth proportional to 27,309.60, 40,976.64 and 13,261.92 is: 19,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,309.60 : 40,976.64 = 13,261.92 : x
  2. Step 2: Convert to fraction form
    27,309.60/40,976.64 = 13,261.92/x
  3. Step 3: Cross multiply
    27,309.60x = 40,976.64 × 13,261.92
  4. Step 4: Simplify right side
    27,309.60x = 543,428,921.55
  5. Step 5: Solve for x
    x = 543,428,921.55/27,309.60
  6. Step 6: Final answer
    x = 19,898.82

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