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Finding the Fourth Proportional to 48,791.19, 73,186.74 and 11,855.19

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Solution

The fourth proportional to 48,791.19, 73,186.74 and 11,855.19 is: 17,782.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,791.19 : 73,186.74 = 11,855.19 : x
  2. Step 2: Convert to fraction form
    48,791.19/73,186.74 = 11,855.19/x
  3. Step 3: Cross multiply
    48,791.19x = 73,186.74 × 11,855.19
  4. Step 4: Simplify right side
    48,791.19x = 867,642,708.18
  5. Step 5: Solve for x
    x = 867,642,708.18/48,791.19
  6. Step 6: Final answer
    x = 17,782.77

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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.