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Finding the Fourth Proportional to 39,648.78, 54,715.26 and 22,881.78

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Solution

The fourth proportional to 39,648.78, 54,715.26 and 22,881.78 is: 31,576.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,648.78 : 54,715.26 = 22,881.78 : x
  2. Step 2: Convert to fraction form
    39,648.78/54,715.26 = 22,881.78/x
  3. Step 3: Cross multiply
    39,648.78x = 54,715.26 × 22,881.78
  4. Step 4: Simplify right side
    39,648.78x = 1,251,982,541.96
  5. Step 5: Solve for x
    x = 1,251,982,541.96/39,648.78
  6. Step 6: Final answer
    x = 31,576.82

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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.