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Finding the Third Proportional to 20,920 and 48,412

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Solution

The third proportional to 20,920 and 48,412 is: 112,032.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920 : 48,412 = 48,412 : x
  2. Step 2: Convert to fraction form
    20,920/48,412 = 48,412/x
  3. Step 3: Cross multiply
    20,920x = 48,412 × 48,412
  4. Step 4: Simplify right side
    20,920x = 2,343,721,744
  5. Step 5: Solve for x
    x = 2,343,721,744/20,920
  6. Step 6: Final answer
    x = 112,032.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.