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Finding the Fourth Proportional to 73,105.35, 100,885.70 and 39,571.35

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Solution

The fourth proportional to 73,105.35, 100,885.70 and 39,571.35 is: 54,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,105.35 : 100,885.70 = 39,571.35 : x
  2. Step 2: Convert to fraction form
    73,105.35/100,885.70 = 39,571.35/x
  3. Step 3: Cross multiply
    73,105.35x = 100,885.70 × 39,571.35
  4. Step 4: Simplify right side
    73,105.35x = 3,992,183,344.70
  5. Step 5: Solve for x
    x = 3,992,183,344.70/73,105.35
  6. Step 6: Final answer
    x = 54,608.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.