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Finding the Third Proportional to 28,538 and 43,920

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Solution

The third proportional to 28,538 and 43,920 is: 67,592.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538 : 43,920 = 43,920 : x
  2. Step 2: Convert to fraction form
    28,538/43,920 = 43,920/x
  3. Step 3: Cross multiply
    28,538x = 43,920 × 43,920
  4. Step 4: Simplify right side
    28,538x = 1,928,966,400
  5. Step 5: Solve for x
    x = 1,928,966,400/28,538
  6. Step 6: Final answer
    x = 67,592.91

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.