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Finding the Fourth Proportional to 69,440.69, 103,983.12 and 48,063.79

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Solution

The fourth proportional to 69,440.69, 103,983.12 and 48,063.79 is: 71,972.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,440.69 : 103,983.12 = 48,063.79 : x
  2. Step 2: Convert to fraction form
    69,440.69/103,983.12 = 48,063.79/x
  3. Step 3: Cross multiply
    69,440.69x = 103,983.12 × 48,063.79
  4. Step 4: Simplify right side
    69,440.69x = 4,997,822,843.22
  5. Step 5: Solve for x
    x = 4,997,822,843.22/69,440.69
  6. Step 6: Final answer
    x = 71,972.54

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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.