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Finding the Third Proportional to 4,891 and 8,765

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Solution

The third proportional to 4,891 and 8,765 is: 15,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891 : 8,765 = 8,765 : x
  2. Step 2: Convert to fraction form
    4,891/8,765 = 8,765/x
  3. Step 3: Cross multiply
    4,891x = 8,765 × 8,765
  4. Step 4: Simplify right side
    4,891x = 76,825,225
  5. Step 5: Solve for x
    x = 76,825,225/4,891
  6. Step 6: Final answer
    x = 15,707.47

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.