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Finding the Fourth Proportional to 69,767.92, 104,648.20 and 40,932.56

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Solution

The fourth proportional to 69,767.92, 104,648.20 and 40,932.56 is: 61,396.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,767.92 : 104,648.20 = 40,932.56 : x
  2. Step 2: Convert to fraction form
    69,767.92/104,648.20 = 40,932.56/x
  3. Step 3: Cross multiply
    69,767.92x = 104,648.20 × 40,932.56
  4. Step 4: Simplify right side
    69,767.92x = 4,283,518,725.39
  5. Step 5: Solve for x
    x = 4,283,518,725.39/69,767.92
  6. Step 6: Final answer
    x = 61,396.68

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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.