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Finding the Third Proportional to 4,938 and 9,396

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Solution

The third proportional to 4,938 and 9,396 is: 17,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938 : 9,396 = 9,396 : x
  2. Step 2: Convert to fraction form
    4,938/9,396 = 9,396/x
  3. Step 3: Cross multiply
    4,938x = 9,396 × 9,396
  4. Step 4: Simplify right side
    4,938x = 88,284,816
  5. Step 5: Solve for x
    x = 88,284,816/4,938
  6. Step 6: Final answer
    x = 17,878.66

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.