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Finding the Third Proportional to 74,221 and 161,763

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Solution

The third proportional to 74,221 and 161,763 is: 352,558.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,221 : 161,763 = 161,763 : x
  2. Step 2: Convert to fraction form
    74,221/161,763 = 161,763/x
  3. Step 3: Cross multiply
    74,221x = 161,763 × 161,763
  4. Step 4: Simplify right side
    74,221x = 26,167,268,169
  5. Step 5: Solve for x
    x = 26,167,268,169/74,221
  6. Step 6: Final answer
    x = 352,558.82

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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.