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Finding the Fourth Proportional to 325,722.80, 488,584.20 and 213,748.40

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Solution

The fourth proportional to 325,722.80, 488,584.20 and 213,748.40 is: 320,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,722.80 : 488,584.20 = 213,748.40 : x
  2. Step 2: Convert to fraction form
    325,722.80/488,584.20 = 213,748.40/x
  3. Step 3: Cross multiply
    325,722.80x = 488,584.20 × 213,748.40
  4. Step 4: Simplify right side
    325,722.80x = 104,434,091,015.28
  5. Step 5: Solve for x
    x = 104,434,091,015.28/325,722.80
  6. Step 6: Final answer
    x = 320,622.60

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