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Finding the Third Proportional to 5,688 and 7,916

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Solution

The third proportional to 5,688 and 7,916 is: 11,016.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,688 : 7,916 = 7,916 : x
  2. Step 2: Convert to fraction form
    5,688/7,916 = 7,916/x
  3. Step 3: Cross multiply
    5,688x = 7,916 × 7,916
  4. Step 4: Simplify right side
    5,688x = 62,663,056
  5. Step 5: Solve for x
    x = 62,663,056/5,688
  6. Step 6: Final answer
    x = 11,016.71

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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.