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Finding the Third Proportional to 1,954.13 and 2,931.19

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Solution

The third proportional to 1,954.13 and 2,931.19 is: 4,396.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.13 : 2,931.19 = 2,931.19 : x
  2. Step 2: Convert to fraction form
    1,954.13/2,931.19 = 2,931.19/x
  3. Step 3: Cross multiply
    1,954.13x = 2,931.19 × 2,931.19
  4. Step 4: Simplify right side
    1,954.13x = 8,591,860.16
  5. Step 5: Solve for x
    x = 8,591,860.16/1,954.13
  6. Step 6: Final answer
    x = 4,396.78

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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.