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Finding the Third Proportional to 3,216 and 4,859

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Solution

The third proportional to 3,216 and 4,859 is: 7,341.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216 : 4,859 = 4,859 : x
  2. Step 2: Convert to fraction form
    3,216/4,859 = 4,859/x
  3. Step 3: Cross multiply
    3,216x = 4,859 × 4,859
  4. Step 4: Simplify right side
    3,216x = 23,609,881
  5. Step 5: Solve for x
    x = 23,609,881/3,216
  6. Step 6: Final answer
    x = 7,341.38

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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.