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Finding the Fourth Proportional to 7,928.56, 11,893.36 and 2,663.15

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Solution

The fourth proportional to 7,928.56, 11,893.36 and 2,663.15 is: 3,994.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.56 : 11,893.36 = 2,663.15 : x
  2. Step 2: Convert to fraction form
    7,928.56/11,893.36 = 2,663.15/x
  3. Step 3: Cross multiply
    7,928.56x = 11,893.36 × 2,663.15
  4. Step 4: Simplify right side
    7,928.56x = 31,673,833.41
  5. Step 5: Solve for x
    x = 31,673,833.41/7,928.56
  6. Step 6: Final answer
    x = 3,994.90

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