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Finding the Fourth Proportional to 69,771.44, 96,121.80 and 48,513.80

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Solution

The fourth proportional to 69,771.44, 96,121.80 and 48,513.80 is: 66,835.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,771.44 : 96,121.80 = 48,513.80 : x
  2. Step 2: Convert to fraction form
    69,771.44/96,121.80 = 48,513.80/x
  3. Step 3: Cross multiply
    69,771.44x = 96,121.80 × 48,513.80
  4. Step 4: Simplify right side
    69,771.44x = 4,663,233,780.84
  5. Step 5: Solve for x
    x = 4,663,233,780.84/69,771.44
  6. Step 6: Final answer
    x = 66,835.85

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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.