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Finding the Fourth Proportional to 20,745.84, 31,092.84 and 10,360.56

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Solution

The fourth proportional to 20,745.84, 31,092.84 and 10,360.56 is: 15,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.84 : 31,092.84 = 10,360.56 : x
  2. Step 2: Convert to fraction form
    20,745.84/31,092.84 = 10,360.56/x
  3. Step 3: Cross multiply
    20,745.84x = 31,092.84 × 10,360.56
  4. Step 4: Simplify right side
    20,745.84x = 322,139,234.39
  5. Step 5: Solve for x
    x = 322,139,234.39/20,745.84
  6. Step 6: Final answer
    x = 15,527.90

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1.5x scale

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.