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Finding the Fourth Proportional to 18,987.62, 28,481.22 and 5,839.83

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Solution

The fourth proportional to 18,987.62, 28,481.22 and 5,839.83 is: 8,759.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.62 : 28,481.22 = 5,839.83 : x
  2. Step 2: Convert to fraction form
    18,987.62/28,481.22 = 5,839.83/x
  3. Step 3: Cross multiply
    18,987.62x = 28,481.22 × 5,839.83
  4. Step 4: Simplify right side
    18,987.62x = 166,325,482.99
  5. Step 5: Solve for x
    x = 166,325,482.99/18,987.62
  6. Step 6: Final answer
    x = 8,759.68

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