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Finding the Fourth Proportional to 548,639.20, 822,958.80 and 174,662.20

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Solution

The fourth proportional to 548,639.20, 822,958.80 and 174,662.20 is: 261,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,639.20 : 822,958.80 = 174,662.20 : x
  2. Step 2: Convert to fraction form
    548,639.20/822,958.80 = 174,662.20/x
  3. Step 3: Cross multiply
    548,639.20x = 822,958.80 × 174,662.20
  4. Step 4: Simplify right side
    548,639.20x = 143,739,794,517.36
  5. Step 5: Solve for x
    x = 143,739,794,517.36/548,639.20
  6. Step 6: Final answer
    x = 261,993.30

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Similar ratio
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1.5x scale

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.