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Finding the Third Proportional to 65,378 and 100,173

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Solution

The third proportional to 65,378 and 100,173 is: 153,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,378 : 100,173 = 100,173 : x
  2. Step 2: Convert to fraction form
    65,378/100,173 = 100,173/x
  3. Step 3: Cross multiply
    65,378x = 100,173 × 100,173
  4. Step 4: Simplify right side
    65,378x = 10,034,629,929
  5. Step 5: Solve for x
    x = 10,034,629,929/65,378
  6. Step 6: Final answer
    x = 153,486.34

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.