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Finding the Fourth Proportional to 74,213.20, 111,319.80 and 44,615.80

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Solution

The fourth proportional to 74,213.20, 111,319.80 and 44,615.80 is: 66,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,213.20 : 111,319.80 = 44,615.80 : x
  2. Step 2: Convert to fraction form
    74,213.20/111,319.80 = 44,615.80/x
  3. Step 3: Cross multiply
    74,213.20x = 111,319.80 × 44,615.80
  4. Step 4: Simplify right side
    74,213.20x = 4,966,621,932.84
  5. Step 5: Solve for x
    x = 4,966,621,932.84/74,213.20
  6. Step 6: Final answer
    x = 66,923.70

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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.