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Finding the Fourth Proportional to 73,125.99, 109,689 and 26,378.85

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Solution

The fourth proportional to 73,125.99, 109,689 and 26,378.85 is: 39,568.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,125.99 : 109,689 = 26,378.85 : x
  2. Step 2: Convert to fraction form
    73,125.99/109,689 = 26,378.85/x
  3. Step 3: Cross multiply
    73,125.99x = 109,689 × 26,378.85
  4. Step 4: Simplify right side
    73,125.99x = 2,893,469,677.65
  5. Step 5: Solve for x
    x = 2,893,469,677.65/73,125.99
  6. Step 6: Final answer
    x = 39,568.28

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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.