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Finding the Fourth Proportional to 79,579.86, 109,736.82 and 59,404.38

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Solution

The fourth proportional to 79,579.86, 109,736.82 and 59,404.38 is: 81,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,579.86 : 109,736.82 = 59,404.38 : x
  2. Step 2: Convert to fraction form
    79,579.86/109,736.82 = 59,404.38/x
  3. Step 3: Cross multiply
    79,579.86x = 109,736.82 × 59,404.38
  4. Step 4: Simplify right side
    79,579.86x = 6,518,847,755.27
  5. Step 5: Solve for x
    x = 6,518,847,755.27/79,579.86
  6. Step 6: Final answer
    x = 81,915.80

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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.