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Finding the Fourth Proportional to 627,920.80, 941,881.20 and 253,751.20

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Solution

The fourth proportional to 627,920.80, 941,881.20 and 253,751.20 is: 380,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,920.80 : 941,881.20 = 253,751.20 : x
  2. Step 2: Convert to fraction form
    627,920.80/941,881.20 = 253,751.20/x
  3. Step 3: Cross multiply
    627,920.80x = 941,881.20 × 253,751.20
  4. Step 4: Simplify right side
    627,920.80x = 239,003,484,757.44
  5. Step 5: Solve for x
    x = 239,003,484,757.44/627,920.80
  6. Step 6: Final answer
    x = 380,626.80

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Double scale
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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.