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Finding the Fourth Proportional to 7,473.20, 11,209.80 and 3,093.80

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Solution

The fourth proportional to 7,473.20, 11,209.80 and 3,093.80 is: 4,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,473.20 : 11,209.80 = 3,093.80 : x
  2. Step 2: Convert to fraction form
    7,473.20/11,209.80 = 3,093.80/x
  3. Step 3: Cross multiply
    7,473.20x = 11,209.80 × 3,093.80
  4. Step 4: Simplify right side
    7,473.20x = 34,680,879.24
  5. Step 5: Solve for x
    x = 34,680,879.24/7,473.20
  6. Step 6: Final answer
    x = 4,640.70

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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.