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Finding the Third Proportional to 613 and 1,235

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Solution

The third proportional to 613 and 1,235 is: 2,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    613 : 1,235 = 1,235 : x
  2. Step 2: Convert to fraction form
    613/1,235 = 1,235/x
  3. Step 3: Cross multiply
    613x = 1,235 × 1,235
  4. Step 4: Simplify right side
    613x = 1,525,225
  5. Step 5: Solve for x
    x = 1,525,225/613
  6. Step 6: Final answer
    x = 2,488.13

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Why These Related Problems?

These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.