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Finding the Third Proportional to 22,160 and 51,920

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Solution

The third proportional to 22,160 and 51,920 is: 121,646.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,160 : 51,920 = 51,920 : x
  2. Step 2: Convert to fraction form
    22,160/51,920 = 51,920/x
  3. Step 3: Cross multiply
    22,160x = 51,920 × 51,920
  4. Step 4: Simplify right side
    22,160x = 2,695,686,400
  5. Step 5: Solve for x
    x = 2,695,686,400/22,160
  6. Step 6: Final answer
    x = 121,646.50

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.