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Finding the Third Proportional to 100,511.50 and 211,374

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Solution

The third proportional to 100,511.50 and 211,374 is: 444,515.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,511.50 : 211,374 = 211,374 : x
  2. Step 2: Convert to fraction form
    100,511.50/211,374 = 211,374/x
  3. Step 3: Cross multiply
    100,511.50x = 211,374 × 211,374
  4. Step 4: Simplify right side
    100,511.50x = 44,678,967,876
  5. Step 5: Solve for x
    x = 44,678,967,876/100,511.50
  6. Step 6: Final answer
    x = 444,515.98

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.