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Finding the Fourth Proportional to 8,720.22, 13,085.88 and 3,173.03

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Solution

The fourth proportional to 8,720.22, 13,085.88 and 3,173.03 is: 4,761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.22 : 13,085.88 = 3,173.03 : x
  2. Step 2: Convert to fraction form
    8,720.22/13,085.88 = 3,173.03/x
  3. Step 3: Cross multiply
    8,720.22x = 13,085.88 × 3,173.03
  4. Step 4: Simplify right side
    8,720.22x = 41,521,824.39
  5. Step 5: Solve for x
    x = 41,521,824.39/8,720.22
  6. Step 6: Final answer
    x = 4,761.56

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