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Finding the Third Proportional to 14,119 and 30,721

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Solution

The third proportional to 14,119 and 30,721 is: 66,844.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119 : 30,721 = 30,721 : x
  2. Step 2: Convert to fraction form
    14,119/30,721 = 30,721/x
  3. Step 3: Cross multiply
    14,119x = 30,721 × 30,721
  4. Step 4: Simplify right side
    14,119x = 943,779,841
  5. Step 5: Solve for x
    x = 943,779,841/14,119
  6. Step 6: Final answer
    x = 66,844.67

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.