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Finding the Fourth Proportional to 79,213.96, 109,317.96 and 43,403.86

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Solution

The fourth proportional to 79,213.96, 109,317.96 and 43,403.86 is: 59,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,213.96 : 109,317.96 = 43,403.86 : x
  2. Step 2: Convert to fraction form
    79,213.96/109,317.96 = 43,403.86/x
  3. Step 3: Cross multiply
    79,213.96x = 109,317.96 × 43,403.86
  4. Step 4: Simplify right side
    79,213.96x = 4,744,821,431.33
  5. Step 5: Solve for x
    x = 4,744,821,431.33/79,213.96
  6. Step 6: Final answer
    x = 59,898.80

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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.