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Finding the Fourth Proportional to 5,418.62, 7,477.70 and 2,934.62

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Solution

The fourth proportional to 5,418.62, 7,477.70 and 2,934.62 is: 4,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.62 : 7,477.70 = 2,934.62 : x
  2. Step 2: Convert to fraction form
    5,418.62/7,477.70 = 2,934.62/x
  3. Step 3: Cross multiply
    5,418.62x = 7,477.70 × 2,934.62
  4. Step 4: Simplify right side
    5,418.62x = 21,944,207.97
  5. Step 5: Solve for x
    x = 21,944,207.97/5,418.62
  6. Step 6: Final answer
    x = 4,049.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.