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Finding the Fourth Proportional to 13,914.92, 20,872.55 and 7,673.74

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Solution

The fourth proportional to 13,914.92, 20,872.55 and 7,673.74 is: 11,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.92 : 20,872.55 = 7,673.74 : x
  2. Step 2: Convert to fraction form
    13,914.92/20,872.55 = 7,673.74/x
  3. Step 3: Cross multiply
    13,914.92x = 20,872.55 × 7,673.74
  4. Step 4: Simplify right side
    13,914.92x = 160,170,488.84
  5. Step 5: Solve for x
    x = 160,170,488.84/13,914.92
  6. Step 6: Final answer
    x = 11,510.70

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