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Finding the Third Proportional to 18,672 and 40,176

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Solution

The third proportional to 18,672 and 40,176 is: 86,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672 : 40,176 = 40,176 : x
  2. Step 2: Convert to fraction form
    18,672/40,176 = 40,176/x
  3. Step 3: Cross multiply
    18,672x = 40,176 × 40,176
  4. Step 4: Simplify right side
    18,672x = 1,614,110,976
  5. Step 5: Solve for x
    x = 1,614,110,976/18,672
  6. Step 6: Final answer
    x = 86,445.53

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.