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Finding the Fourth Proportional to 73,424.80, 110,148.72 and 43,876

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Solution

The fourth proportional to 73,424.80, 110,148.72 and 43,876 is: 65,820.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,424.80 : 110,148.72 = 43,876 : x
  2. Step 2: Convert to fraction form
    73,424.80/110,148.72 = 43,876/x
  3. Step 3: Cross multiply
    73,424.80x = 110,148.72 × 43,876
  4. Step 4: Simplify right side
    73,424.80x = 4,832,885,238.72
  5. Step 5: Solve for x
    x = 4,832,885,238.72/73,424.80
  6. Step 6: Final answer
    x = 65,820.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.