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Finding the Third Proportional to 4,998 and 7,768

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Solution

The third proportional to 4,998 and 7,768 is: 12,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,998 : 7,768 = 7,768 : x
  2. Step 2: Convert to fraction form
    4,998/7,768 = 7,768/x
  3. Step 3: Cross multiply
    4,998x = 7,768 × 7,768
  4. Step 4: Simplify right side
    4,998x = 60,341,824
  5. Step 5: Solve for x
    x = 60,341,824/4,998
  6. Step 6: Final answer
    x = 12,073.19

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.