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Finding the Third Proportional to 75,916 and 161,688

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Solution

The third proportional to 75,916 and 161,688 is: 344,367.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,916 : 161,688 = 161,688 : x
  2. Step 2: Convert to fraction form
    75,916/161,688 = 161,688/x
  3. Step 3: Cross multiply
    75,916x = 161,688 × 161,688
  4. Step 4: Simplify right side
    75,916x = 26,143,009,344
  5. Step 5: Solve for x
    x = 26,143,009,344/75,916
  6. Step 6: Final answer
    x = 344,367.58

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.