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Finding the Third Proportional to 4,520 and 9,391

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Solution

The third proportional to 4,520 and 9,391 is: 19,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,520 : 9,391 = 9,391 : x
  2. Step 2: Convert to fraction form
    4,520/9,391 = 9,391/x
  3. Step 3: Cross multiply
    4,520x = 9,391 × 9,391
  4. Step 4: Simplify right side
    4,520x = 88,190,881
  5. Step 5: Solve for x
    x = 88,190,881/4,520
  6. Step 6: Final answer
    x = 19,511.26

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.