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Finding the Fourth Proportional to 73,738.72, 101,720.64 and 49,873.42

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Solution

The fourth proportional to 73,738.72, 101,720.64 and 49,873.42 is: 68,799.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,738.72 : 101,720.64 = 49,873.42 : x
  2. Step 2: Convert to fraction form
    73,738.72/101,720.64 = 49,873.42/x
  3. Step 3: Cross multiply
    73,738.72x = 101,720.64 × 49,873.42
  4. Step 4: Simplify right side
    73,738.72x = 5,073,156,201.39
  5. Step 5: Solve for x
    x = 5,073,156,201.39/73,738.72
  6. Step 6: Final answer
    x = 68,799.08

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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.