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Finding the Fourth Proportional to 215,587.92, 323,529.84 and 75,346.68

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Solution

The fourth proportional to 215,587.92, 323,529.84 and 75,346.68 is: 113,071.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,587.92 : 323,529.84 = 75,346.68 : x
  2. Step 2: Convert to fraction form
    215,587.92/323,529.84 = 75,346.68/x
  3. Step 3: Cross multiply
    215,587.92x = 323,529.84 × 75,346.68
  4. Step 4: Simplify right side
    215,587.92x = 24,376,899,324.93
  5. Step 5: Solve for x
    x = 24,376,899,324.93/215,587.92
  6. Step 6: Final answer
    x = 113,071.73

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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.