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Finding the Third Proportional to 4,685 and 7,057

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Solution

The third proportional to 4,685 and 7,057 is: 10,629.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685 : 7,057 = 7,057 : x
  2. Step 2: Convert to fraction form
    4,685/7,057 = 7,057/x
  3. Step 3: Cross multiply
    4,685x = 7,057 × 7,057
  4. Step 4: Simplify right side
    4,685x = 49,801,249
  5. Step 5: Solve for x
    x = 49,801,249/4,685
  6. Step 6: Final answer
    x = 10,629.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.