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Finding the Fourth Proportional to 73,421.92, 110,137.44 and 20,835.52

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Solution

The fourth proportional to 73,421.92, 110,137.44 and 20,835.52 is: 31,254.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,421.92 : 110,137.44 = 20,835.52 : x
  2. Step 2: Convert to fraction form
    73,421.92/110,137.44 = 20,835.52/x
  3. Step 3: Cross multiply
    73,421.92x = 110,137.44 × 20,835.52
  4. Step 4: Simplify right side
    73,421.92x = 2,294,770,833.87
  5. Step 5: Solve for x
    x = 2,294,770,833.87/73,421.92
  6. Step 6: Final answer
    x = 31,254.57

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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.