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Finding the Third Proportional to 4,957 and 7,419

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Solution

The third proportional to 4,957 and 7,419 is: 11,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,957 : 7,419 = 7,419 : x
  2. Step 2: Convert to fraction form
    4,957/7,419 = 7,419/x
  3. Step 3: Cross multiply
    4,957x = 7,419 × 7,419
  4. Step 4: Simplify right side
    4,957x = 55,041,561
  5. Step 5: Solve for x
    x = 55,041,561/4,957
  6. Step 6: Final answer
    x = 11,103.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.