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Finding the Third Proportional to 53,220 and 80,222

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Solution

The third proportional to 53,220 and 80,222 is: 120,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,220 : 80,222 = 80,222 : x
  2. Step 2: Convert to fraction form
    53,220/80,222 = 80,222/x
  3. Step 3: Cross multiply
    53,220x = 80,222 × 80,222
  4. Step 4: Simplify right side
    53,220x = 6,435,569,284
  5. Step 5: Solve for x
    x = 6,435,569,284/53,220
  6. Step 6: Final answer
    x = 120,923.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.