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Finding the Third Proportional to 90,649.50 and 200,091

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Solution

The third proportional to 90,649.50 and 200,091 is: 441,661.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.50 : 200,091 = 200,091 : x
  2. Step 2: Convert to fraction form
    90,649.50/200,091 = 200,091/x
  3. Step 3: Cross multiply
    90,649.50x = 200,091 × 200,091
  4. Step 4: Simplify right side
    90,649.50x = 40,036,408,281
  5. Step 5: Solve for x
    x = 40,036,408,281/90,649.50
  6. Step 6: Final answer
    x = 441,661.66

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.