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Finding the Fourth Proportional to 48,753.19, 73,129.78 and 11,817.19

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Solution

The fourth proportional to 48,753.19, 73,129.78 and 11,817.19 is: 17,725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,753.19 : 73,129.78 = 11,817.19 : x
  2. Step 2: Convert to fraction form
    48,753.19/73,129.78 = 11,817.19/x
  3. Step 3: Cross multiply
    48,753.19x = 73,129.78 × 11,817.19
  4. Step 4: Simplify right side
    48,753.19x = 864,188,504.92
  5. Step 5: Solve for x
    x = 864,188,504.92/48,753.19
  6. Step 6: Final answer
    x = 17,725.78

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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.