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Finding the Third Proportional to 598 and 1,388

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Solution

The third proportional to 598 and 1,388 is: 3,221.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    598 : 1,388 = 1,388 : x
  2. Step 2: Convert to fraction form
    598/1,388 = 1,388/x
  3. Step 3: Cross multiply
    598x = 1,388 × 1,388
  4. Step 4: Simplify right side
    598x = 1,926,544
  5. Step 5: Solve for x
    x = 1,926,544/598
  6. Step 6: Final answer
    x = 3,221.65

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.