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Finding the Fourth Proportional to 49,135.92, 67,805.28 and 28,993.65

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Solution

The fourth proportional to 49,135.92, 67,805.28 and 28,993.65 is: 40,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,135.92 : 67,805.28 = 28,993.65 : x
  2. Step 2: Convert to fraction form
    49,135.92/67,805.28 = 28,993.65/x
  3. Step 3: Cross multiply
    49,135.92x = 67,805.28 × 28,993.65
  4. Step 4: Simplify right side
    49,135.92x = 1,965,922,556.47
  5. Step 5: Solve for x
    x = 1,965,922,556.47/49,135.92
  6. Step 6: Final answer
    x = 40,009.89

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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.