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Finding the Fourth Proportional to 79,608.48, 109,861.02 and 43,800

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Solution

The fourth proportional to 79,608.48, 109,861.02 and 43,800 is: 60,444.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,608.48 : 109,861.02 = 43,800 : x
  2. Step 2: Convert to fraction form
    79,608.48/109,861.02 = 43,800/x
  3. Step 3: Cross multiply
    79,608.48x = 109,861.02 × 43,800
  4. Step 4: Simplify right side
    79,608.48x = 4,811,912,676
  5. Step 5: Solve for x
    x = 4,811,912,676/79,608.48
  6. Step 6: Final answer
    x = 60,444.72

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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.