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Finding the Fourth Proportional to 51,638.28, 71,282.88 and 43,721.88

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Solution

The fourth proportional to 51,638.28, 71,282.88 and 43,721.88 is: 60,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,638.28 : 71,282.88 = 43,721.88 : x
  2. Step 2: Convert to fraction form
    51,638.28/71,282.88 = 43,721.88/x
  3. Step 3: Cross multiply
    51,638.28x = 71,282.88 × 43,721.88
  4. Step 4: Simplify right side
    51,638.28x = 3,116,621,525.41
  5. Step 5: Solve for x
    x = 3,116,621,525.41/51,638.28
  6. Step 6: Final answer
    x = 60,354.87

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