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Finding the Fourth Proportional to 8,388.41, 12,584.12 and 3,455.30

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Solution

The fourth proportional to 8,388.41, 12,584.12 and 3,455.30 is: 5,183.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.41 : 12,584.12 = 3,455.30 : x
  2. Step 2: Convert to fraction form
    8,388.41/12,584.12 = 3,455.30/x
  3. Step 3: Cross multiply
    8,388.41x = 12,584.12 × 3,455.30
  4. Step 4: Simplify right side
    8,388.41x = 43,481,829.64
  5. Step 5: Solve for x
    x = 43,481,829.64/8,388.41
  6. Step 6: Final answer
    x = 5,183.56

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