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Finding the Third Proportional to 4,632 and 9,987

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Solution

The third proportional to 4,632 and 9,987 is: 21,532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,632 : 9,987 = 9,987 : x
  2. Step 2: Convert to fraction form
    4,632/9,987 = 9,987/x
  3. Step 3: Cross multiply
    4,632x = 9,987 × 9,987
  4. Step 4: Simplify right side
    4,632x = 99,740,169
  5. Step 5: Solve for x
    x = 99,740,169/4,632
  6. Step 6: Final answer
    x = 21,532.85

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.