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Finding the Fourth Proportional to 355,385.20, 532,300.20 and 308,729.20

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Solution

The fourth proportional to 355,385.20, 532,300.20 and 308,729.20 is: 462,418.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,385.20 : 532,300.20 = 308,729.20 : x
  2. Step 2: Convert to fraction form
    355,385.20/532,300.20 = 308,729.20/x
  3. Step 3: Cross multiply
    355,385.20x = 532,300.20 × 308,729.20
  4. Step 4: Simplify right side
    355,385.20x = 164,336,614,905.84
  5. Step 5: Solve for x
    x = 164,336,614,905.84/355,385.20
  6. Step 6: Final answer
    x = 462,418.29

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