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Finding the Fourth Proportional to 45,821.81, 68,732.81 and 12,542.21

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Solution

The fourth proportional to 45,821.81, 68,732.81 and 12,542.21 is: 18,813.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,821.81 : 68,732.81 = 12,542.21 : x
  2. Step 2: Convert to fraction form
    45,821.81/68,732.81 = 12,542.21/x
  3. Step 3: Cross multiply
    45,821.81x = 68,732.81 × 12,542.21
  4. Step 4: Simplify right side
    45,821.81x = 862,060,930.54
  5. Step 5: Solve for x
    x = 862,060,930.54/45,821.81
  6. Step 6: Final answer
    x = 18,813.33

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