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Finding the Third Proportional to 909.50 and 1,935

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Solution

The third proportional to 909.50 and 1,935 is: 4,116.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.50 : 1,935 = 1,935 : x
  2. Step 2: Convert to fraction form
    909.50/1,935 = 1,935/x
  3. Step 3: Cross multiply
    909.50x = 1,935 × 1,935
  4. Step 4: Simplify right side
    909.50x = 3,744,225
  5. Step 5: Solve for x
    x = 3,744,225/909.50
  6. Step 6: Final answer
    x = 4,116.79

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.