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Finding the Third Proportional to 38,574 and 80,220

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Solution

The third proportional to 38,574 and 80,220 is: 166,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,574 : 80,220 = 80,220 : x
  2. Step 2: Convert to fraction form
    38,574/80,220 = 80,220/x
  3. Step 3: Cross multiply
    38,574x = 80,220 × 80,220
  4. Step 4: Simplify right side
    38,574x = 6,435,248,400
  5. Step 5: Solve for x
    x = 6,435,248,400/38,574
  6. Step 6: Final answer
    x = 166,828.65

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.