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Finding the Fourth Proportional to 49,697.48, 68,584.34 and 28,480.86

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Solution

The fourth proportional to 49,697.48, 68,584.34 and 28,480.86 is: 39,304.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,697.48 : 68,584.34 = 28,480.86 : x
  2. Step 2: Convert to fraction form
    49,697.48/68,584.34 = 28,480.86/x
  3. Step 3: Cross multiply
    49,697.48x = 68,584.34 × 28,480.86
  4. Step 4: Simplify right side
    49,697.48x = 1,953,340,985.73
  5. Step 5: Solve for x
    x = 1,953,340,985.73/49,697.48
  6. Step 6: Final answer
    x = 39,304.63

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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.