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Finding the Fourth Proportional to 79,468.86, 109,669.56 and 43,659.66

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Solution

The fourth proportional to 79,468.86, 109,669.56 and 43,659.66 is: 60,251.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,468.86 : 109,669.56 = 43,659.66 : x
  2. Step 2: Convert to fraction form
    79,468.86/109,669.56 = 43,659.66/x
  3. Step 3: Cross multiply
    79,468.86x = 109,669.56 × 43,659.66
  4. Step 4: Simplify right side
    79,468.86x = 4,788,135,701.95
  5. Step 5: Solve for x
    x = 4,788,135,701.95/79,468.86
  6. Step 6: Final answer
    x = 60,251.72

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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.