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Finding the Third Proportional to 31,502 and 49,305

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Solution

The third proportional to 31,502 and 49,305 is: 77,169.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,502 : 49,305 = 49,305 : x
  2. Step 2: Convert to fraction form
    31,502/49,305 = 49,305/x
  3. Step 3: Cross multiply
    31,502x = 49,305 × 49,305
  4. Step 4: Simplify right side
    31,502x = 2,430,983,025
  5. Step 5: Solve for x
    x = 2,430,983,025/31,502
  6. Step 6: Final answer
    x = 77,169.16

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.