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Finding the Fourth Proportional to 627,279.60, 940,919.40 and 206,500.80

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Solution

The fourth proportional to 627,279.60, 940,919.40 and 206,500.80 is: 309,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,279.60 : 940,919.40 = 206,500.80 : x
  2. Step 2: Convert to fraction form
    627,279.60/940,919.40 = 206,500.80/x
  3. Step 3: Cross multiply
    627,279.60x = 940,919.40 × 206,500.80
  4. Step 4: Simplify right side
    627,279.60x = 194,300,608,835.52
  5. Step 5: Solve for x
    x = 194,300,608,835.52/627,279.60
  6. Step 6: Final answer
    x = 309,751.20

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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.