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Finding the Fourth Proportional to 79,506.42, 109,721.49 and 43,697.70

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Solution

The fourth proportional to 79,506.42, 109,721.49 and 43,697.70 is: 60,304.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,506.42 : 109,721.49 = 43,697.70 : x
  2. Step 2: Convert to fraction form
    79,506.42/109,721.49 = 43,697.70/x
  3. Step 3: Cross multiply
    79,506.42x = 109,721.49 × 43,697.70
  4. Step 4: Simplify right side
    79,506.42x = 4,794,576,753.57
  5. Step 5: Solve for x
    x = 4,794,576,753.57/79,506.42
  6. Step 6: Final answer
    x = 60,304.27

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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.