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Finding the Fourth Proportional to 471,990.80, 706,819.80 and 313,360.40

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Solution

The fourth proportional to 471,990.80, 706,819.80 and 313,360.40 is: 469,266.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,990.80 : 706,819.80 = 313,360.40 : x
  2. Step 2: Convert to fraction form
    471,990.80/706,819.80 = 313,360.40/x
  3. Step 3: Cross multiply
    471,990.80x = 706,819.80 × 313,360.40
  4. Step 4: Simplify right side
    471,990.80x = 221,489,335,255.92
  5. Step 5: Solve for x
    x = 221,489,335,255.92/471,990.80
  6. Step 6: Final answer
    x = 469,266.21

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