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Finding the Fourth Proportional to 354,428.52, 531,040.98 and 213,891.84

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Solution

The fourth proportional to 354,428.52, 531,040.98 and 213,891.84 is: 320,474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,428.52 : 531,040.98 = 213,891.84 : x
  2. Step 2: Convert to fraction form
    354,428.52/531,040.98 = 213,891.84/x
  3. Step 3: Cross multiply
    354,428.52x = 531,040.98 × 213,891.84
  4. Step 4: Simplify right side
    354,428.52x = 113,585,332,327.60
  5. Step 5: Solve for x
    x = 113,585,332,327.60/354,428.52
  6. Step 6: Final answer
    x = 320,474.58

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