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Finding the Third Proportional to 20,988 and 46,116

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Solution

The third proportional to 20,988 and 46,116 is: 101,328.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988 : 46,116 = 46,116 : x
  2. Step 2: Convert to fraction form
    20,988/46,116 = 46,116/x
  3. Step 3: Cross multiply
    20,988x = 46,116 × 46,116
  4. Step 4: Simplify right side
    20,988x = 2,126,685,456
  5. Step 5: Solve for x
    x = 2,126,685,456/20,988
  6. Step 6: Final answer
    x = 101,328.64

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.