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Finding the Third Proportional to 2,981 and 4,656

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Solution

The third proportional to 2,981 and 4,656 is: 7,272.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981 : 4,656 = 4,656 : x
  2. Step 2: Convert to fraction form
    2,981/4,656 = 4,656/x
  3. Step 3: Cross multiply
    2,981x = 4,656 × 4,656
  4. Step 4: Simplify right side
    2,981x = 21,678,336
  5. Step 5: Solve for x
    x = 21,678,336/2,981
  6. Step 6: Final answer
    x = 7,272.17

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.