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Finding the Fourth Proportional to 3,183.44, 4,774.80 and 992.24

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Solution

The fourth proportional to 3,183.44, 4,774.80 and 992.24 is: 1,488.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.44 : 4,774.80 = 992.24 : x
  2. Step 2: Convert to fraction form
    3,183.44/4,774.80 = 992.24/x
  3. Step 3: Cross multiply
    3,183.44x = 4,774.80 × 992.24
  4. Step 4: Simplify right side
    3,183.44x = 4,737,747.55
  5. Step 5: Solve for x
    x = 4,737,747.55/3,183.44
  6. Step 6: Final answer
    x = 1,488.25

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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.