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Finding the Fourth Proportional to 627,745.70, 941,618.55 and 206,999.30

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Solution

The fourth proportional to 627,745.70, 941,618.55 and 206,999.30 is: 310,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,745.70 : 941,618.55 = 206,999.30 : x
  2. Step 2: Convert to fraction form
    627,745.70/941,618.55 = 206,999.30/x
  3. Step 3: Cross multiply
    627,745.70x = 941,618.55 × 206,999.30
  4. Step 4: Simplify right side
    627,745.70x = 194,914,380,717.02
  5. Step 5: Solve for x
    x = 194,914,380,717.02/627,745.70
  6. Step 6: Final answer
    x = 310,498.95

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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.