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Finding the Fourth Proportional to 2,296.70, 3,169.46 and 1,248.76

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Solution

The fourth proportional to 2,296.70, 3,169.46 and 1,248.76 is: 1,723.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,296.70 : 3,169.46 = 1,248.76 : x
  2. Step 2: Convert to fraction form
    2,296.70/3,169.46 = 1,248.76/x
  3. Step 3: Cross multiply
    2,296.70x = 3,169.46 × 1,248.76
  4. Step 4: Simplify right side
    2,296.70x = 3,957,894.87
  5. Step 5: Solve for x
    x = 3,957,894.87/2,296.70
  6. Step 6: Final answer
    x = 1,723.30

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Half scale
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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.