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Finding the Fourth Proportional to 16,990.78, 25,496.19 and 6,469.66

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Solution

The fourth proportional to 16,990.78, 25,496.19 and 6,469.66 is: 9,708.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.78 : 25,496.19 = 6,469.66 : x
  2. Step 2: Convert to fraction form
    16,990.78/25,496.19 = 6,469.66/x
  3. Step 3: Cross multiply
    16,990.78x = 25,496.19 × 6,469.66
  4. Step 4: Simplify right side
    16,990.78x = 164,951,680.60
  5. Step 5: Solve for x
    x = 164,951,680.60/16,990.78
  6. Step 6: Final answer
    x = 9,708.31

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