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Finding the Fourth Proportional to 45,772.54, 68,669.78 and 19,103.69

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Solution

The fourth proportional to 45,772.54, 68,669.78 and 19,103.69 is: 28,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,772.54 : 68,669.78 = 19,103.69 : x
  2. Step 2: Convert to fraction form
    45,772.54/68,669.78 = 19,103.69/x
  3. Step 3: Cross multiply
    45,772.54x = 68,669.78 × 19,103.69
  4. Step 4: Simplify right side
    45,772.54x = 1,311,846,265.64
  5. Step 5: Solve for x
    x = 1,311,846,265.64/45,772.54
  6. Step 6: Final answer
    x = 28,660.12

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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.