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Finding the Fourth Proportional to 5,751.36, 8,619.80 and 3,118.86

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Solution

The fourth proportional to 5,751.36, 8,619.80 and 3,118.86 is: 4,674.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751.36 : 8,619.80 = 3,118.86 : x
  2. Step 2: Convert to fraction form
    5,751.36/8,619.80 = 3,118.86/x
  3. Step 3: Cross multiply
    5,751.36x = 8,619.80 × 3,118.86
  4. Step 4: Simplify right side
    5,751.36x = 26,883,933.83
  5. Step 5: Solve for x
    x = 26,883,933.83/5,751.36
  6. Step 6: Final answer
    x = 4,674.36

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