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Finding the Third Proportional to 4,895 and 5,615

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Solution

The third proportional to 4,895 and 5,615 is: 6,440.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,895 : 5,615 = 5,615 : x
  2. Step 2: Convert to fraction form
    4,895/5,615 = 5,615/x
  3. Step 3: Cross multiply
    4,895x = 5,615 × 5,615
  4. Step 4: Simplify right side
    4,895x = 31,528,225
  5. Step 5: Solve for x
    x = 31,528,225/4,895
  6. Step 6: Final answer
    x = 6,440.90

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.