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Finding the Fourth Proportional to 3,742.92, 5,614.62 and 969.61

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Solution

The fourth proportional to 3,742.92, 5,614.62 and 969.61 is: 1,454.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,742.92 : 5,614.62 = 969.61 : x
  2. Step 2: Convert to fraction form
    3,742.92/5,614.62 = 969.61/x
  3. Step 3: Cross multiply
    3,742.92x = 5,614.62 × 969.61
  4. Step 4: Simplify right side
    3,742.92x = 5,443,991.70
  5. Step 5: Solve for x
    x = 5,443,991.70/3,742.92
  6. Step 6: Final answer
    x = 1,454.48

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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.