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Finding the Third Proportional to 616 and 1,358

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Solution

The third proportional to 616 and 1,358 is: 2,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    616 : 1,358 = 1,358 : x
  2. Step 2: Convert to fraction form
    616/1,358 = 1,358/x
  3. Step 3: Cross multiply
    616x = 1,358 × 1,358
  4. Step 4: Simplify right side
    616x = 1,844,164
  5. Step 5: Solve for x
    x = 1,844,164/616
  6. Step 6: Final answer
    x = 2,993.77

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.