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Finding the Fourth Proportional to 73,121.64, 109,669.50 and 26,374.92

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Solution

The fourth proportional to 73,121.64, 109,669.50 and 26,374.92 is: 39,557.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,121.64 : 109,669.50 = 26,374.92 : x
  2. Step 2: Convert to fraction form
    73,121.64/109,669.50 = 26,374.92/x
  3. Step 3: Cross multiply
    73,121.64x = 109,669.50 × 26,374.92
  4. Step 4: Simplify right side
    73,121.64x = 2,892,524,288.94
  5. Step 5: Solve for x
    x = 2,892,524,288.94/73,121.64
  6. Step 6: Final answer
    x = 39,557.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.