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Finding the Third Proportional to 31,779 and 46,682

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Solution

The third proportional to 31,779 and 46,682 is: 68,573.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779 : 46,682 = 46,682 : x
  2. Step 2: Convert to fraction form
    31,779/46,682 = 46,682/x
  3. Step 3: Cross multiply
    31,779x = 46,682 × 46,682
  4. Step 4: Simplify right side
    31,779x = 2,179,209,124
  5. Step 5: Solve for x
    x = 2,179,209,124/31,779
  6. Step 6: Final answer
    x = 68,573.87

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.