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Finding the Third Proportional to 191.25 and 202.50

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Solution

The third proportional to 191.25 and 202.50 is: 214.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.25 : 202.50 = 202.50 : x
  2. Step 2: Convert to fraction form
    191.25/202.50 = 202.50/x
  3. Step 3: Cross multiply
    191.25x = 202.50 × 202.50
  4. Step 4: Simplify right side
    191.25x = 41,006.25
  5. Step 5: Solve for x
    x = 41,006.25/191.25
  6. Step 6: Final answer
    x = 214.41

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Why These Related Problems?

These problems maintain the same ratio (1.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.