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Finding the Third Proportional to 7,824 and 11,370

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Solution

The third proportional to 7,824 and 11,370 is: 16,523.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824 : 11,370 = 11,370 : x
  2. Step 2: Convert to fraction form
    7,824/11,370 = 11,370/x
  3. Step 3: Cross multiply
    7,824x = 11,370 × 11,370
  4. Step 4: Simplify right side
    7,824x = 129,276,900
  5. Step 5: Solve for x
    x = 129,276,900/7,824
  6. Step 6: Final answer
    x = 16,523.12

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.