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Finding the Third Proportional to 47,420 and 73,182

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Solution

The third proportional to 47,420 and 73,182 is: 112,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,420 : 73,182 = 73,182 : x
  2. Step 2: Convert to fraction form
    47,420/73,182 = 73,182/x
  3. Step 3: Cross multiply
    47,420x = 73,182 × 73,182
  4. Step 4: Simplify right side
    47,420x = 5,355,605,124
  5. Step 5: Solve for x
    x = 5,355,605,124/47,420
  6. Step 6: Final answer
    x = 112,939.80

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.