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Finding the Third Proportional to 3,890 and 6,175

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Solution

The third proportional to 3,890 and 6,175 is: 9,802.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890 : 6,175 = 6,175 : x
  2. Step 2: Convert to fraction form
    3,890/6,175 = 6,175/x
  3. Step 3: Cross multiply
    3,890x = 6,175 × 6,175
  4. Step 4: Simplify right side
    3,890x = 38,130,625
  5. Step 5: Solve for x
    x = 38,130,625/3,890
  6. Step 6: Final answer
    x = 9,802.22

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.