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Finding the Fourth Proportional to 99,235.80, 136,942.20 and 53,912.16

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Solution

The fourth proportional to 99,235.80, 136,942.20 and 53,912.16 is: 74,397.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,235.80 : 136,942.20 = 53,912.16 : x
  2. Step 2: Convert to fraction form
    99,235.80/136,942.20 = 53,912.16/x
  3. Step 3: Cross multiply
    99,235.80x = 136,942.20 × 53,912.16
  4. Step 4: Simplify right side
    99,235.80x = 7,382,849,797.15
  5. Step 5: Solve for x
    x = 7,382,849,797.15/99,235.80
  6. Step 6: Final answer
    x = 74,397.04

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