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Finding the Fourth Proportional to 7,111.44, 10,668.40 and 2,431.92

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Solution

The fourth proportional to 7,111.44, 10,668.40 and 2,431.92 is: 3,648.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.44 : 10,668.40 = 2,431.92 : x
  2. Step 2: Convert to fraction form
    7,111.44/10,668.40 = 2,431.92/x
  3. Step 3: Cross multiply
    7,111.44x = 10,668.40 × 2,431.92
  4. Step 4: Simplify right side
    7,111.44x = 25,944,695.33
  5. Step 5: Solve for x
    x = 25,944,695.33/7,111.44
  6. Step 6: Final answer
    x = 3,648.30

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