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Finding the Third Proportional to 532 and 1,378

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Solution

The third proportional to 532 and 1,378 is: 3,569.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    532 : 1,378 = 1,378 : x
  2. Step 2: Convert to fraction form
    532/1,378 = 1,378/x
  3. Step 3: Cross multiply
    532x = 1,378 × 1,378
  4. Step 4: Simplify right side
    532x = 1,898,884
  5. Step 5: Solve for x
    x = 1,898,884/532
  6. Step 6: Final answer
    x = 3,569.33

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Why These Related Problems?

These problems maintain the same ratio (2.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.