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Finding the Fourth Proportional to 18,664.40, 27,991.74 and 6,185.54

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Solution

The fourth proportional to 18,664.40, 27,991.74 and 6,185.54 is: 9,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.40 : 27,991.74 = 6,185.54 : x
  2. Step 2: Convert to fraction form
    18,664.40/27,991.74 = 6,185.54/x
  3. Step 3: Cross multiply
    18,664.40x = 27,991.74 × 6,185.54
  4. Step 4: Simplify right side
    18,664.40x = 173,144,027.44
  5. Step 5: Solve for x
    x = 173,144,027.44/18,664.40
  6. Step 6: Final answer
    x = 9,276.70

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