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Finding the Third Proportional to 28,280 and 61,432

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Solution

The third proportional to 28,280 and 61,432 is: 133,447.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280 : 61,432 = 61,432 : x
  2. Step 2: Convert to fraction form
    28,280/61,432 = 61,432/x
  3. Step 3: Cross multiply
    28,280x = 61,432 × 61,432
  4. Step 4: Simplify right side
    28,280x = 3,773,890,624
  5. Step 5: Solve for x
    x = 3,773,890,624/28,280
  6. Step 6: Final answer
    x = 133,447.33

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.