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Finding the Fourth Proportional to 8,407.96, 12,619.72 and 4,250.90

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Solution

The fourth proportional to 8,407.96, 12,619.72 and 4,250.90 is: 6,380.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.96 : 12,619.72 = 4,250.90 : x
  2. Step 2: Convert to fraction form
    8,407.96/12,619.72 = 4,250.90/x
  3. Step 3: Cross multiply
    8,407.96x = 12,619.72 × 4,250.90
  4. Step 4: Simplify right side
    8,407.96x = 53,645,167.75
  5. Step 5: Solve for x
    x = 53,645,167.75/8,407.96
  6. Step 6: Final answer
    x = 6,380.28

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