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Finding the Fourth Proportional to 67,645.86, 101,321.16 and 41,270.64

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Solution

The fourth proportional to 67,645.86, 101,321.16 and 41,270.64 is: 61,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,645.86 : 101,321.16 = 41,270.64 : x
  2. Step 2: Convert to fraction form
    67,645.86/101,321.16 = 41,270.64/x
  3. Step 3: Cross multiply
    67,645.86x = 101,321.16 × 41,270.64
  4. Step 4: Simplify right side
    67,645.86x = 4,181,589,118.74
  5. Step 5: Solve for x
    x = 4,181,589,118.74/67,645.86
  6. Step 6: Final answer
    x = 61,815.89

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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.