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Finding the Fourth Proportional to 389,900.20, 583,928.70 and 264,562.60

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Solution

The fourth proportional to 389,900.20, 583,928.70 and 264,562.60 is: 396,218.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,900.20 : 583,928.70 = 264,562.60 : x
  2. Step 2: Convert to fraction form
    389,900.20/583,928.70 = 264,562.60/x
  3. Step 3: Cross multiply
    389,900.20x = 583,928.70 × 264,562.60
  4. Step 4: Simplify right side
    389,900.20x = 154,485,695,086.62
  5. Step 5: Solve for x
    x = 154,485,695,086.62/389,900.20
  6. Step 6: Final answer
    x = 396,218.56

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