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Finding the Fourth Proportional to 13,772.62, 18,984.41 and 12,628.50

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Solution

The fourth proportional to 13,772.62, 18,984.41 and 12,628.50 is: 17,407.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.62 : 18,984.41 = 12,628.50 : x
  2. Step 2: Convert to fraction form
    13,772.62/18,984.41 = 12,628.50/x
  3. Step 3: Cross multiply
    13,772.62x = 18,984.41 × 12,628.50
  4. Step 4: Simplify right side
    13,772.62x = 239,744,463.62
  5. Step 5: Solve for x
    x = 239,744,463.62/13,772.62
  6. Step 6: Final answer
    x = 17,407.32

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