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Finding the Fourth Proportional to 101,048.26, 139,444.08 and 55,724.80

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Solution

The fourth proportional to 101,048.26, 139,444.08 and 55,724.80 is: 76,898.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,048.26 : 139,444.08 = 55,724.80 : x
  2. Step 2: Convert to fraction form
    101,048.26/139,444.08 = 55,724.80/x
  3. Step 3: Cross multiply
    101,048.26x = 139,444.08 × 55,724.80
  4. Step 4: Simplify right side
    101,048.26x = 7,770,493,469.18
  5. Step 5: Solve for x
    x = 7,770,493,469.18/101,048.26
  6. Step 6: Final answer
    x = 76,898.83

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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.