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Finding the Fourth Proportional to 170,930.80, 256,396.20 and 76,160.80

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Solution

The fourth proportional to 170,930.80, 256,396.20 and 76,160.80 is: 114,241.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,930.80 : 256,396.20 = 76,160.80 : x
  2. Step 2: Convert to fraction form
    170,930.80/256,396.20 = 76,160.80/x
  3. Step 3: Cross multiply
    170,930.80x = 256,396.20 × 76,160.80
  4. Step 4: Simplify right side
    170,930.80x = 19,527,339,708.96
  5. Step 5: Solve for x
    x = 19,527,339,708.96/170,930.80
  6. Step 6: Final answer
    x = 114,241.20

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