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Finding the Third Proportional to 4,212 and 4,887

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Solution

The third proportional to 4,212 and 4,887 is: 5,670.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212 : 4,887 = 4,887 : x
  2. Step 2: Convert to fraction form
    4,212/4,887 = 4,887/x
  3. Step 3: Cross multiply
    4,212x = 4,887 × 4,887
  4. Step 4: Simplify right side
    4,212x = 23,882,769
  5. Step 5: Solve for x
    x = 23,882,769/4,212
  6. Step 6: Final answer
    x = 5,670.17

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.