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Finding the Third Proportional to 909 and 967.50

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Solution

The third proportional to 909 and 967.50 is: 1,029.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    909 : 967.50 = 967.50 : x
  2. Step 2: Convert to fraction form
    909/967.50 = 967.50/x
  3. Step 3: Cross multiply
    909x = 967.50 × 967.50
  4. Step 4: Simplify right side
    909x = 936,056.25
  5. Step 5: Solve for x
    x = 936,056.25/909
  6. Step 6: Final answer
    x = 1,029.76

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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.