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Finding the Third Proportional to 2,913.19 and 3,916.69

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Solution

The third proportional to 2,913.19 and 3,916.69 is: 5,265.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.19 : 3,916.69 = 3,916.69 : x
  2. Step 2: Convert to fraction form
    2,913.19/3,916.69 = 3,916.69/x
  3. Step 3: Cross multiply
    2,913.19x = 3,916.69 × 3,916.69
  4. Step 4: Simplify right side
    2,913.19x = 15,340,440.97
  5. Step 5: Solve for x
    x = 15,340,440.97/2,913.19
  6. Step 6: Final answer
    x = 5,265.86

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.