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Finding the Fourth Proportional to 79,508.89, 109,721.94 and 43,700.41

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Solution

The fourth proportional to 79,508.89, 109,721.94 and 43,700.41 is: 60,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,508.89 : 109,721.94 = 43,700.41 : x
  2. Step 2: Convert to fraction form
    79,508.89/109,721.94 = 43,700.41/x
  3. Step 3: Cross multiply
    79,508.89x = 109,721.94 × 43,700.41
  4. Step 4: Simplify right side
    79,508.89x = 4,794,893,983.09
  5. Step 5: Solve for x
    x = 4,794,893,983.09/79,508.89
  6. Step 6: Final answer
    x = 60,306.39

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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.