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Finding the Fourth Proportional to 20,644.56, 30,944.70 and 15,701.94

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Solution

The fourth proportional to 20,644.56, 30,944.70 and 15,701.94 is: 23,536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.56 : 30,944.70 = 15,701.94 : x
  2. Step 2: Convert to fraction form
    20,644.56/30,944.70 = 15,701.94/x
  3. Step 3: Cross multiply
    20,644.56x = 30,944.70 × 15,701.94
  4. Step 4: Simplify right side
    20,644.56x = 485,891,822.72
  5. Step 5: Solve for x
    x = 485,891,822.72/20,644.56
  6. Step 6: Final answer
    x = 23,536.07

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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.