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Finding the Fourth Proportional to 79,412.47, 109,589.42 and 43,604.80

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Solution

The fourth proportional to 79,412.47, 109,589.42 and 43,604.80 is: 60,174.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,412.47 : 109,589.42 = 43,604.80 : x
  2. Step 2: Convert to fraction form
    79,412.47/109,589.42 = 43,604.80/x
  3. Step 3: Cross multiply
    79,412.47x = 109,589.42 × 43,604.80
  4. Step 4: Simplify right side
    79,412.47x = 4,778,623,975.24
  5. Step 5: Solve for x
    x = 4,778,623,975.24/79,412.47
  6. Step 6: Final answer
    x = 60,174.73

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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.