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Finding the Fourth Proportional to 74,487.85, 102,793.22 and 40,953.85

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Solution

The fourth proportional to 74,487.85, 102,793.22 and 40,953.85 is: 56,516.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.85 : 102,793.22 = 40,953.85 : x
  2. Step 2: Convert to fraction form
    74,487.85/102,793.22 = 40,953.85/x
  3. Step 3: Cross multiply
    74,487.85x = 102,793.22 × 40,953.85
  4. Step 4: Simplify right side
    74,487.85x = 4,209,777,958.30
  5. Step 5: Solve for x
    x = 4,209,777,958.30/74,487.85
  6. Step 6: Final answer
    x = 56,516.31

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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.