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Finding the Third Proportional to 5,922 and 9,690

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Solution

The third proportional to 5,922 and 9,690 is: 15,855.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,922 : 9,690 = 9,690 : x
  2. Step 2: Convert to fraction form
    5,922/9,690 = 9,690/x
  3. Step 3: Cross multiply
    5,922x = 9,690 × 9,690
  4. Step 4: Simplify right side
    5,922x = 93,896,100
  5. Step 5: Solve for x
    x = 93,896,100/5,922
  6. Step 6: Final answer
    x = 15,855.47

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.