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Finding the Third Proportional to 3,130 and 4,549

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Solution

The third proportional to 3,130 and 4,549 is: 6,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130 : 4,549 = 4,549 : x
  2. Step 2: Convert to fraction form
    3,130/4,549 = 4,549/x
  3. Step 3: Cross multiply
    3,130x = 4,549 × 4,549
  4. Step 4: Simplify right side
    3,130x = 20,693,401
  5. Step 5: Solve for x
    x = 20,693,401/3,130
  6. Step 6: Final answer
    x = 6,611.31

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.