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Finding the Third Proportional to 48,402 and 72,279

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Solution

The third proportional to 48,402 and 72,279 is: 107,934.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,402 : 72,279 = 72,279 : x
  2. Step 2: Convert to fraction form
    48,402/72,279 = 72,279/x
  3. Step 3: Cross multiply
    48,402x = 72,279 × 72,279
  4. Step 4: Simplify right side
    48,402x = 5,224,253,841
  5. Step 5: Solve for x
    x = 5,224,253,841/48,402
  6. Step 6: Final answer
    x = 107,934.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.