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Finding the Fourth Proportional to 72,872.88, 100,562.67 and 41,039.88

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Solution

The fourth proportional to 72,872.88, 100,562.67 and 41,039.88 is: 56,633.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,872.88 : 100,562.67 = 41,039.88 : x
  2. Step 2: Convert to fraction form
    72,872.88/100,562.67 = 41,039.88/x
  3. Step 3: Cross multiply
    72,872.88x = 100,562.67 × 41,039.88
  4. Step 4: Simplify right side
    72,872.88x = 4,127,079,909.28
  5. Step 5: Solve for x
    x = 4,127,079,909.28/72,872.88
  6. Step 6: Final answer
    x = 56,633.96

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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.