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Finding the Third Proportional to 4,792 and 9,830

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Solution

The third proportional to 4,792 and 9,830 is: 20,164.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,792 : 9,830 = 9,830 : x
  2. Step 2: Convert to fraction form
    4,792/9,830 = 9,830/x
  3. Step 3: Cross multiply
    4,792x = 9,830 × 9,830
  4. Step 4: Simplify right side
    4,792x = 96,628,900
  5. Step 5: Solve for x
    x = 96,628,900/4,792
  6. Step 6: Final answer
    x = 20,164.63

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.