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Finding the Third Proportional to 21,512 and 32,124

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Solution

The third proportional to 21,512 and 32,124 is: 47,970.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512 : 32,124 = 32,124 : x
  2. Step 2: Convert to fraction form
    21,512/32,124 = 32,124/x
  3. Step 3: Cross multiply
    21,512x = 32,124 × 32,124
  4. Step 4: Simplify right side
    21,512x = 1,031,951,376
  5. Step 5: Solve for x
    x = 1,031,951,376/21,512
  6. Step 6: Final answer
    x = 47,970.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.