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Finding the Fourth Proportional to 79,165.50, 109,245.92 and 43,354.58

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Solution

The fourth proportional to 79,165.50, 109,245.92 and 43,354.58 is: 59,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,165.50 : 109,245.92 = 43,354.58 : x
  2. Step 2: Convert to fraction form
    79,165.50/109,245.92 = 43,354.58/x
  3. Step 3: Cross multiply
    79,165.50x = 109,245.92 × 43,354.58
  4. Step 4: Simplify right side
    79,165.50x = 4,736,310,978.31
  5. Step 5: Solve for x
    x = 4,736,310,978.31/79,165.50
  6. Step 6: Final answer
    x = 59,827.97

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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.