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Finding the Fourth Proportional to 69,785.76, 104,723.04 and 25,408.20

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Solution

The fourth proportional to 69,785.76, 104,723.04 and 25,408.20 is: 38,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,785.76 : 104,723.04 = 25,408.20 : x
  2. Step 2: Convert to fraction form
    69,785.76/104,723.04 = 25,408.20/x
  3. Step 3: Cross multiply
    69,785.76x = 104,723.04 × 25,408.20
  4. Step 4: Simplify right side
    69,785.76x = 2,660,823,944.93
  5. Step 5: Solve for x
    x = 2,660,823,944.93/69,785.76
  6. Step 6: Final answer
    x = 38,128.47

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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.