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Finding the Fourth Proportional to 189,239.52, 261,163.44 and 109,751.52

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Solution

The fourth proportional to 189,239.52, 261,163.44 and 109,751.52 is: 151,464.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,239.52 : 261,163.44 = 109,751.52 : x
  2. Step 2: Convert to fraction form
    189,239.52/261,163.44 = 109,751.52/x
  3. Step 3: Cross multiply
    189,239.52x = 261,163.44 × 109,751.52
  4. Step 4: Simplify right side
    189,239.52x = 28,663,084,508.43
  5. Step 5: Solve for x
    x = 28,663,084,508.43/189,239.52
  6. Step 6: Final answer
    x = 151,464.58

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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.