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Finding the Fourth Proportional to 79,493.15, 109,676.63 and 47,650.43

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Solution

The fourth proportional to 79,493.15, 109,676.63 and 47,650.43 is: 65,743.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,493.15 : 109,676.63 = 47,650.43 : x
  2. Step 2: Convert to fraction form
    79,493.15/109,676.63 = 47,650.43/x
  3. Step 3: Cross multiply
    79,493.15x = 109,676.63 × 47,650.43
  4. Step 4: Simplify right side
    79,493.15x = 5,226,138,342.20
  5. Step 5: Solve for x
    x = 5,226,138,342.20/79,493.15
  6. Step 6: Final answer
    x = 65,743.25

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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.