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Finding the Fourth Proportional to 19,046.56, 28,579.56 and 8,656.96

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Solution

The fourth proportional to 19,046.56, 28,579.56 and 8,656.96 is: 12,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,046.56 : 28,579.56 = 8,656.96 : x
  2. Step 2: Convert to fraction form
    19,046.56/28,579.56 = 8,656.96/x
  3. Step 3: Cross multiply
    19,046.56x = 28,579.56 × 8,656.96
  4. Step 4: Simplify right side
    19,046.56x = 247,412,107.74
  5. Step 5: Solve for x
    x = 247,412,107.74/19,046.56
  6. Step 6: Final answer
    x = 12,989.86

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