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Finding the Fourth Proportional to 192,646.80, 288,964.80 and 87,465.60

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Solution

The fourth proportional to 192,646.80, 288,964.80 and 87,465.60 is: 131,195.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,646.80 : 288,964.80 = 87,465.60 : x
  2. Step 2: Convert to fraction form
    192,646.80/288,964.80 = 87,465.60/x
  3. Step 3: Cross multiply
    192,646.80x = 288,964.80 × 87,465.60
  4. Step 4: Simplify right side
    192,646.80x = 25,274,479,610.88
  5. Step 5: Solve for x
    x = 25,274,479,610.88/192,646.80
  6. Step 6: Final answer
    x = 131,195.95

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