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Finding the Fourth Proportional to 7,742.72, 10,695.84 and 6,168.96

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Solution

The fourth proportional to 7,742.72, 10,695.84 and 6,168.96 is: 8,521.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.72 : 10,695.84 = 6,168.96 : x
  2. Step 2: Convert to fraction form
    7,742.72/10,695.84 = 6,168.96/x
  3. Step 3: Cross multiply
    7,742.72x = 10,695.84 × 6,168.96
  4. Step 4: Simplify right side
    7,742.72x = 65,982,209.13
  5. Step 5: Solve for x
    x = 65,982,209.13/7,742.72
  6. Step 6: Final answer
    x = 8,521.84

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