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Finding the Fourth Proportional to 47,297.20, 70,945.80 and 44,381.20

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Solution

The fourth proportional to 47,297.20, 70,945.80 and 44,381.20 is: 66,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,297.20 : 70,945.80 = 44,381.20 : x
  2. Step 2: Convert to fraction form
    47,297.20/70,945.80 = 44,381.20/x
  3. Step 3: Cross multiply
    47,297.20x = 70,945.80 × 44,381.20
  4. Step 4: Simplify right side
    47,297.20x = 3,148,659,738.96
  5. Step 5: Solve for x
    x = 3,148,659,738.96/47,297.20
  6. Step 6: Final answer
    x = 66,571.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.