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Finding the Fourth Proportional to 9,983.63, 13,779.77 and 6,209.69

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Solution

The fourth proportional to 9,983.63, 13,779.77 and 6,209.69 is: 8,570.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,983.63 : 13,779.77 = 6,209.69 : x
  2. Step 2: Convert to fraction form
    9,983.63/13,779.77 = 6,209.69/x
  3. Step 3: Cross multiply
    9,983.63x = 13,779.77 × 6,209.69
  4. Step 4: Simplify right side
    9,983.63x = 85,568,099.97
  5. Step 5: Solve for x
    x = 85,568,099.97/9,983.63
  6. Step 6: Final answer
    x = 8,570.84

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