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Finding the Third Proportional to 15,201 and 31,608

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Solution

The third proportional to 15,201 and 31,608 is: 65,723.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,201 : 31,608 = 31,608 : x
  2. Step 2: Convert to fraction form
    15,201/31,608 = 31,608/x
  3. Step 3: Cross multiply
    15,201x = 31,608 × 31,608
  4. Step 4: Simplify right side
    15,201x = 999,065,664
  5. Step 5: Solve for x
    x = 999,065,664/15,201
  6. Step 6: Final answer
    x = 65,723.68

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.