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Finding the Third Proportional to 72,936 and 157,032

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Solution

The third proportional to 72,936 and 157,032 is: 338,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,936 : 157,032 = 157,032 : x
  2. Step 2: Convert to fraction form
    72,936/157,032 = 157,032/x
  3. Step 3: Cross multiply
    72,936x = 157,032 × 157,032
  4. Step 4: Simplify right side
    72,936x = 24,659,049,024
  5. Step 5: Solve for x
    x = 24,659,049,024/72,936
  6. Step 6: Final answer
    x = 338,091.60

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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.