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Finding the Fourth Proportional to 48,751.75, 73,127.63 and 11,815.75

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Solution

The fourth proportional to 48,751.75, 73,127.63 and 11,815.75 is: 17,723.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,751.75 : 73,127.63 = 11,815.75 : x
  2. Step 2: Convert to fraction form
    48,751.75/73,127.63 = 11,815.75/x
  3. Step 3: Cross multiply
    48,751.75x = 73,127.63 × 11,815.75
  4. Step 4: Simplify right side
    48,751.75x = 864,057,794.17
  5. Step 5: Solve for x
    x = 864,057,794.17/48,751.75
  6. Step 6: Final answer
    x = 17,723.63

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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.