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Finding the Fourth Proportional to 72,949.79, 100,671.48 and 41,118.69

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Solution

The fourth proportional to 72,949.79, 100,671.48 and 41,118.69 is: 56,744.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,949.79 : 100,671.48 = 41,118.69 : x
  2. Step 2: Convert to fraction form
    72,949.79/100,671.48 = 41,118.69/x
  3. Step 3: Cross multiply
    72,949.79x = 100,671.48 × 41,118.69
  4. Step 4: Simplify right side
    72,949.79x = 4,139,479,377.96
  5. Step 5: Solve for x
    x = 4,139,479,377.96/72,949.79
  6. Step 6: Final answer
    x = 56,744.22

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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.