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Finding the Third Proportional to 21,955 and 31,373

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Solution

The third proportional to 21,955 and 31,373 is: 44,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955 : 31,373 = 31,373 : x
  2. Step 2: Convert to fraction form
    21,955/31,373 = 31,373/x
  3. Step 3: Cross multiply
    21,955x = 31,373 × 31,373
  4. Step 4: Simplify right side
    21,955x = 984,265,129
  5. Step 5: Solve for x
    x = 984,265,129/21,955
  6. Step 6: Final answer
    x = 44,831.02

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.