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Finding the Fourth Proportional to 99,605.80, 137,455.96 and 54,893.80

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Solution

The fourth proportional to 99,605.80, 137,455.96 and 54,893.80 is: 75,753.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,605.80 : 137,455.96 = 54,893.80 : x
  2. Step 2: Convert to fraction form
    99,605.80/137,455.96 = 54,893.80/x
  3. Step 3: Cross multiply
    99,605.80x = 137,455.96 × 54,893.80
  4. Step 4: Simplify right side
    99,605.80x = 7,545,479,977.05
  5. Step 5: Solve for x
    x = 7,545,479,977.05/99,605.80
  6. Step 6: Final answer
    x = 75,753.42

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