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Finding the Third Proportional to 7,291 and 15,774

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Solution

The third proportional to 7,291 and 15,774 is: 34,126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291 : 15,774 = 15,774 : x
  2. Step 2: Convert to fraction form
    7,291/15,774 = 15,774/x
  3. Step 3: Cross multiply
    7,291x = 15,774 × 15,774
  4. Step 4: Simplify right side
    7,291x = 248,819,076
  5. Step 5: Solve for x
    x = 248,819,076/7,291
  6. Step 6: Final answer
    x = 34,126.88

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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.