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Finding the Fourth Proportional to 26,814.60, 40,221.90 and 16,921.80

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Solution

The fourth proportional to 26,814.60, 40,221.90 and 16,921.80 is: 25,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,814.60 : 40,221.90 = 16,921.80 : x
  2. Step 2: Convert to fraction form
    26,814.60/40,221.90 = 16,921.80/x
  3. Step 3: Cross multiply
    26,814.60x = 40,221.90 × 16,921.80
  4. Step 4: Simplify right side
    26,814.60x = 680,626,947.42
  5. Step 5: Solve for x
    x = 680,626,947.42/26,814.60
  6. Step 6: Final answer
    x = 25,382.70

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