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Finding the Third Proportional to 3,906 and 6,465

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Solution

The third proportional to 3,906 and 6,465 is: 10,700.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906 : 6,465 = 6,465 : x
  2. Step 2: Convert to fraction form
    3,906/6,465 = 6,465/x
  3. Step 3: Cross multiply
    3,906x = 6,465 × 6,465
  4. Step 4: Simplify right side
    3,906x = 41,796,225
  5. Step 5: Solve for x
    x = 41,796,225/3,906
  6. Step 6: Final answer
    x = 10,700.52

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.