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Finding the Third Proportional to 19,430 and 41,925

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Solution

The third proportional to 19,430 and 41,925 is: 90,463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,430 : 41,925 = 41,925 : x
  2. Step 2: Convert to fraction form
    19,430/41,925 = 41,925/x
  3. Step 3: Cross multiply
    19,430x = 41,925 × 41,925
  4. Step 4: Simplify right side
    19,430x = 1,757,705,625
  5. Step 5: Solve for x
    x = 1,757,705,625/19,430
  6. Step 6: Final answer
    x = 90,463.49

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.