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Finding the Third Proportional to 25,432 and 39,378

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Solution

The third proportional to 25,432 and 39,378 is: 60,971.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,432 : 39,378 = 39,378 : x
  2. Step 2: Convert to fraction form
    25,432/39,378 = 39,378/x
  3. Step 3: Cross multiply
    25,432x = 39,378 × 39,378
  4. Step 4: Simplify right side
    25,432x = 1,550,626,884
  5. Step 5: Solve for x
    x = 1,550,626,884/25,432
  6. Step 6: Final answer
    x = 60,971.49

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.