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Finding the Fourth Proportional to 230,940.40, 346,324.20 and 81,122.80

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Solution

The fourth proportional to 230,940.40, 346,324.20 and 81,122.80 is: 121,653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,940.40 : 346,324.20 = 81,122.80 : x
  2. Step 2: Convert to fraction form
    230,940.40/346,324.20 = 81,122.80/x
  3. Step 3: Cross multiply
    230,940.40x = 346,324.20 × 81,122.80
  4. Step 4: Simplify right side
    230,940.40x = 28,094,788,811.76
  5. Step 5: Solve for x
    x = 28,094,788,811.76/230,940.40
  6. Step 6: Final answer
    x = 121,653.85

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