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Finding the Third Proportional to 15,791 and 34,112

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Solution

The third proportional to 15,791 and 34,112 is: 73,689.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791 : 34,112 = 34,112 : x
  2. Step 2: Convert to fraction form
    15,791/34,112 = 34,112/x
  3. Step 3: Cross multiply
    15,791x = 34,112 × 34,112
  4. Step 4: Simplify right side
    15,791x = 1,163,628,544
  5. Step 5: Solve for x
    x = 1,163,628,544/15,791
  6. Step 6: Final answer
    x = 73,689.35

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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.