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Finding the Third Proportional to 906 and 1,635

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Solution

The third proportional to 906 and 1,635 is: 2,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    906 : 1,635 = 1,635 : x
  2. Step 2: Convert to fraction form
    906/1,635 = 1,635/x
  3. Step 3: Cross multiply
    906x = 1,635 × 1,635
  4. Step 4: Simplify right side
    906x = 2,673,225
  5. Step 5: Solve for x
    x = 2,673,225/906
  6. Step 6: Final answer
    x = 2,950.58

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.