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Finding the Fourth Proportional to 45,287.20, 67,930.80 and 34,919.20

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Solution

The fourth proportional to 45,287.20, 67,930.80 and 34,919.20 is: 52,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,287.20 : 67,930.80 = 34,919.20 : x
  2. Step 2: Convert to fraction form
    45,287.20/67,930.80 = 34,919.20/x
  3. Step 3: Cross multiply
    45,287.20x = 67,930.80 × 34,919.20
  4. Step 4: Simplify right side
    45,287.20x = 2,372,089,191.36
  5. Step 5: Solve for x
    x = 2,372,089,191.36/45,287.20
  6. Step 6: Final answer
    x = 52,378.80

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