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Finding the Fourth Proportional to 61,912.72, 85,437.21 and 35,049.88

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Solution

The fourth proportional to 61,912.72, 85,437.21 and 35,049.88 is: 48,367.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,912.72 : 85,437.21 = 35,049.88 : x
  2. Step 2: Convert to fraction form
    61,912.72/85,437.21 = 35,049.88/x
  3. Step 3: Cross multiply
    61,912.72x = 85,437.21 × 35,049.88
  4. Step 4: Simplify right side
    61,912.72x = 2,994,563,958.03
  5. Step 5: Solve for x
    x = 2,994,563,958.03/61,912.72
  6. Step 6: Final answer
    x = 48,367.51

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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.