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Finding the Fourth Proportional to 101,051.62, 151,621.20 and 54,249.82

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Solution

The fourth proportional to 101,051.62, 151,621.20 and 54,249.82 is: 81,398.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,051.62 : 151,621.20 = 54,249.82 : x
  2. Step 2: Convert to fraction form
    101,051.62/151,621.20 = 54,249.82/x
  3. Step 3: Cross multiply
    101,051.62x = 151,621.20 × 54,249.82
  4. Step 4: Simplify right side
    101,051.62x = 8,225,422,429.13
  5. Step 5: Solve for x
    x = 8,225,422,429.13/101,051.62
  6. Step 6: Final answer
    x = 81,398.23

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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.