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Finding the Third Proportional to 835 and 1,789

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Solution

The third proportional to 835 and 1,789 is: 3,832.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    835 : 1,789 = 1,789 : x
  2. Step 2: Convert to fraction form
    835/1,789 = 1,789/x
  3. Step 3: Cross multiply
    835x = 1,789 × 1,789
  4. Step 4: Simplify right side
    835x = 3,200,521
  5. Step 5: Solve for x
    x = 3,200,521/835
  6. Step 6: Final answer
    x = 3,832.96

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.