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Finding the Fourth Proportional to 1,199,978.20, 1,797,998.46 and 726,798.52

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Solution

The fourth proportional to 1,199,978.20, 1,797,998.46 and 726,798.52 is: 1,089,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199,978.20 : 1,797,998.46 = 726,798.52 : x
  2. Step 2: Convert to fraction form
    1,199,978.20/1,797,998.46 = 726,798.52/x
  3. Step 3: Cross multiply
    1,199,978.20x = 1,797,998.46 × 726,798.52
  4. Step 4: Simplify right side
    1,199,978.20x = 1,306,782,619,690.28
  5. Step 5: Solve for x
    x = 1,306,782,619,690.28/1,199,978.20
  6. Step 6: Final answer
    x = 1,089,005.30

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