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Finding the Fourth Proportional to 72,995.72, 100,716.84 and 44,314.64

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Solution

The fourth proportional to 72,995.72, 100,716.84 and 44,314.64 is: 61,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,995.72 : 100,716.84 = 44,314.64 : x
  2. Step 2: Convert to fraction form
    72,995.72/100,716.84 = 44,314.64/x
  3. Step 3: Cross multiply
    72,995.72x = 100,716.84 × 44,314.64
  4. Step 4: Simplify right side
    72,995.72x = 4,463,230,506.54
  5. Step 5: Solve for x
    x = 4,463,230,506.54/72,995.72
  6. Step 6: Final answer
    x = 61,143.73

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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.