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Finding the Fourth Proportional to 99,912.20, 149,846.70 and 43,752.20

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Solution

The fourth proportional to 99,912.20, 149,846.70 and 43,752.20 is: 65,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.20 : 149,846.70 = 43,752.20 : x
  2. Step 2: Convert to fraction form
    99,912.20/149,846.70 = 43,752.20/x
  3. Step 3: Cross multiply
    99,912.20x = 149,846.70 × 43,752.20
  4. Step 4: Simplify right side
    99,912.20x = 6,556,122,787.74
  5. Step 5: Solve for x
    x = 6,556,122,787.74/99,912.20
  6. Step 6: Final answer
    x = 65,618.84

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