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Finding the Fourth Proportional to 69,344.80, 103,786.80 and 48,608.80

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Solution

The fourth proportional to 69,344.80, 103,786.80 and 48,608.80 is: 72,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,344.80 : 103,786.80 = 48,608.80 : x
  2. Step 2: Convert to fraction form
    69,344.80/103,786.80 = 48,608.80/x
  3. Step 3: Cross multiply
    69,344.80x = 103,786.80 × 48,608.80
  4. Step 4: Simplify right side
    69,344.80x = 5,044,951,803.84
  5. Step 5: Solve for x
    x = 5,044,951,803.84/69,344.80
  6. Step 6: Final answer
    x = 72,751.70

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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.