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Finding the Third Proportional to 4,646 and 9,931

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Solution

The third proportional to 4,646 and 9,931 is: 21,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,646 : 9,931 = 9,931 : x
  2. Step 2: Convert to fraction form
    4,646/9,931 = 9,931/x
  3. Step 3: Cross multiply
    4,646x = 9,931 × 9,931
  4. Step 4: Simplify right side
    4,646x = 98,624,761
  5. Step 5: Solve for x
    x = 98,624,761/4,646
  6. Step 6: Final answer
    x = 21,227.89

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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.