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Finding the Fourth Proportional to 74,459.50, 102,753.97 and 40,467.87

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Solution

The fourth proportional to 74,459.50, 102,753.97 and 40,467.87 is: 55,845.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,459.50 : 102,753.97 = 40,467.87 : x
  2. Step 2: Convert to fraction form
    74,459.50/102,753.97 = 40,467.87/x
  3. Step 3: Cross multiply
    74,459.50x = 102,753.97 × 40,467.87
  4. Step 4: Simplify right side
    74,459.50x = 4,158,234,198.77
  5. Step 5: Solve for x
    x = 4,158,234,198.77/74,459.50
  6. Step 6: Final answer
    x = 55,845.59

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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.