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Finding the Third Proportional to 79,240 and 148,624

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Solution

The third proportional to 79,240 and 148,624 is: 278,761.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,240 : 148,624 = 148,624 : x
  2. Step 2: Convert to fraction form
    79,240/148,624 = 148,624/x
  3. Step 3: Cross multiply
    79,240x = 148,624 × 148,624
  4. Step 4: Simplify right side
    79,240x = 22,089,093,376
  5. Step 5: Solve for x
    x = 22,089,093,376/79,240
  6. Step 6: Final answer
    x = 278,761.91

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.