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Finding the Fourth Proportional to 33,128.87, 45,706.80 and 18,786.92

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Solution

The fourth proportional to 33,128.87, 45,706.80 and 18,786.92 is: 25,919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.87 : 45,706.80 = 18,786.92 : x
  2. Step 2: Convert to fraction form
    33,128.87/45,706.80 = 18,786.92/x
  3. Step 3: Cross multiply
    33,128.87x = 45,706.80 × 18,786.92
  4. Step 4: Simplify right side
    33,128.87x = 858,689,766.52
  5. Step 5: Solve for x
    x = 858,689,766.52/33,128.87
  6. Step 6: Final answer
    x = 25,919.68

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