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Finding the Third Proportional to 3,906 and 5,527

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Solution

The third proportional to 3,906 and 5,527 is: 7,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906 : 5,527 = 5,527 : x
  2. Step 2: Convert to fraction form
    3,906/5,527 = 5,527/x
  3. Step 3: Cross multiply
    3,906x = 5,527 × 5,527
  4. Step 4: Simplify right side
    3,906x = 30,547,729
  5. Step 5: Solve for x
    x = 30,547,729/3,906
  6. Step 6: Final answer
    x = 7,820.72

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.