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Finding the Fourth Proportional to 229,076.40, 343,031.40 and 218,578.80

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Solution

The fourth proportional to 229,076.40, 343,031.40 and 218,578.80 is: 327,311.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,076.40 : 343,031.40 = 218,578.80 : x
  2. Step 2: Convert to fraction form
    229,076.40/343,031.40 = 218,578.80/x
  3. Step 3: Cross multiply
    229,076.40x = 343,031.40 × 218,578.80
  4. Step 4: Simplify right side
    229,076.40x = 74,979,391,774.32
  5. Step 5: Solve for x
    x = 74,979,391,774.32/229,076.40
  6. Step 6: Final answer
    x = 327,311.73

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