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Finding the Third Proportional to 5,461 and 7,615

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Solution

The third proportional to 5,461 and 7,615 is: 10,618.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,461 : 7,615 = 7,615 : x
  2. Step 2: Convert to fraction form
    5,461/7,615 = 7,615/x
  3. Step 3: Cross multiply
    5,461x = 7,615 × 7,615
  4. Step 4: Simplify right side
    5,461x = 57,988,225
  5. Step 5: Solve for x
    x = 57,988,225/5,461
  6. Step 6: Final answer
    x = 10,618.61

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.