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Finding the Third Proportional to 77,701.50 and 166,731

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Solution

The third proportional to 77,701.50 and 166,731 is: 357,769.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,701.50 : 166,731 = 166,731 : x
  2. Step 2: Convert to fraction form
    77,701.50/166,731 = 166,731/x
  3. Step 3: Cross multiply
    77,701.50x = 166,731 × 166,731
  4. Step 4: Simplify right side
    77,701.50x = 27,799,226,361
  5. Step 5: Solve for x
    x = 27,799,226,361/77,701.50
  6. Step 6: Final answer
    x = 357,769.49

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.