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Finding the Fourth Proportional to 414,794.40, 622,847.70 and 315,067.20

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Solution

The fourth proportional to 414,794.40, 622,847.70 and 315,067.20 is: 473,099.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,794.40 : 622,847.70 = 315,067.20 : x
  2. Step 2: Convert to fraction form
    414,794.40/622,847.70 = 315,067.20/x
  3. Step 3: Cross multiply
    414,794.40x = 622,847.70 × 315,067.20
  4. Step 4: Simplify right side
    414,794.40x = 196,238,880,865.44
  5. Step 5: Solve for x
    x = 196,238,880,865.44/414,794.40
  6. Step 6: Final answer
    x = 473,099.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.