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Finding the Fourth Proportional to 1,747.92, 2,411.96 and 961.94

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Solution

The fourth proportional to 1,747.92, 2,411.96 and 961.94 is: 1,327.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.92 : 2,411.96 = 961.94 : x
  2. Step 2: Convert to fraction form
    1,747.92/2,411.96 = 961.94/x
  3. Step 3: Cross multiply
    1,747.92x = 2,411.96 × 961.94
  4. Step 4: Simplify right side
    1,747.92x = 2,320,160.80
  5. Step 5: Solve for x
    x = 2,320,160.80/1,747.92
  6. Step 6: Final answer
    x = 1,327.38

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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.