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Finding the Fourth Proportional to 57,302.78, 79,025.64 and 37,138.64

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Solution

The fourth proportional to 57,302.78, 79,025.64 and 37,138.64 is: 51,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,302.78 : 79,025.64 = 37,138.64 : x
  2. Step 2: Convert to fraction form
    57,302.78/79,025.64 = 37,138.64/x
  3. Step 3: Cross multiply
    57,302.78x = 79,025.64 × 37,138.64
  4. Step 4: Simplify right side
    57,302.78x = 2,934,904,794.73
  5. Step 5: Solve for x
    x = 2,934,904,794.73/57,302.78
  6. Step 6: Final answer
    x = 51,217.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.