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Finding the Fourth Proportional to 34,481.31, 51,722.15 and 13,704.87

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Solution

The fourth proportional to 34,481.31, 51,722.15 and 13,704.87 is: 20,557.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,481.31 : 51,722.15 = 13,704.87 : x
  2. Step 2: Convert to fraction form
    34,481.31/51,722.15 = 13,704.87/x
  3. Step 3: Cross multiply
    34,481.31x = 51,722.15 × 13,704.87
  4. Step 4: Simplify right side
    34,481.31x = 708,845,341.87
  5. Step 5: Solve for x
    x = 708,845,341.87/34,481.31
  6. Step 6: Final answer
    x = 20,557.38

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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.