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Finding the Third Proportional to 4,940 and 7,385

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Solution

The third proportional to 4,940 and 7,385 is: 11,040.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940 : 7,385 = 7,385 : x
  2. Step 2: Convert to fraction form
    4,940/7,385 = 7,385/x
  3. Step 3: Cross multiply
    4,940x = 7,385 × 7,385
  4. Step 4: Simplify right side
    4,940x = 54,538,225
  5. Step 5: Solve for x
    x = 54,538,225/4,940
  6. Step 6: Final answer
    x = 11,040.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.