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Finding the Third Proportional to 21,108 and 46,134

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Solution

The third proportional to 21,108 and 46,134 is: 100,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108 : 46,134 = 46,134 : x
  2. Step 2: Convert to fraction form
    21,108/46,134 = 46,134/x
  3. Step 3: Cross multiply
    21,108x = 46,134 × 46,134
  4. Step 4: Simplify right side
    21,108x = 2,128,345,956
  5. Step 5: Solve for x
    x = 2,128,345,956/21,108
  6. Step 6: Final answer
    x = 100,831.25

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.