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Finding the Third Proportional to 76,828.50 and 167,121

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Solution

The third proportional to 76,828.50 and 167,121 is: 363,529.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,828.50 : 167,121 = 167,121 : x
  2. Step 2: Convert to fraction form
    76,828.50/167,121 = 167,121/x
  3. Step 3: Cross multiply
    76,828.50x = 167,121 × 167,121
  4. Step 4: Simplify right side
    76,828.50x = 27,929,428,641
  5. Step 5: Solve for x
    x = 27,929,428,641/76,828.50
  6. Step 6: Final answer
    x = 363,529.53

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.