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Finding the Fourth Proportional to 26,821.80, 40,232.70 and 12,031.20

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Solution

The fourth proportional to 26,821.80, 40,232.70 and 12,031.20 is: 18,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,821.80 : 40,232.70 = 12,031.20 : x
  2. Step 2: Convert to fraction form
    26,821.80/40,232.70 = 12,031.20/x
  3. Step 3: Cross multiply
    26,821.80x = 40,232.70 × 12,031.20
  4. Step 4: Simplify right side
    26,821.80x = 484,047,660.24
  5. Step 5: Solve for x
    x = 484,047,660.24/26,821.80
  6. Step 6: Final answer
    x = 18,046.80

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