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Finding the Fourth Proportional to 321,912.20, 482,865.90 and 97,272.20

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Solution

The fourth proportional to 321,912.20, 482,865.90 and 97,272.20 is: 145,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,912.20 : 482,865.90 = 97,272.20 : x
  2. Step 2: Convert to fraction form
    321,912.20/482,865.90 = 97,272.20/x
  3. Step 3: Cross multiply
    321,912.20x = 482,865.90 × 97,272.20
  4. Step 4: Simplify right side
    321,912.20x = 46,969,428,397.98
  5. Step 5: Solve for x
    x = 46,969,428,397.98/321,912.20
  6. Step 6: Final answer
    x = 145,907.57

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