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Finding the Fourth Proportional to 49,603.79, 74,404.13 and 12,163.97

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Solution

The fourth proportional to 49,603.79, 74,404.13 and 12,163.97 is: 18,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,603.79 : 74,404.13 = 12,163.97 : x
  2. Step 2: Convert to fraction form
    49,603.79/74,404.13 = 12,163.97/x
  3. Step 3: Cross multiply
    49,603.79x = 74,404.13 × 12,163.97
  4. Step 4: Simplify right side
    49,603.79x = 905,049,172.36
  5. Step 5: Solve for x
    x = 905,049,172.36/49,603.79
  6. Step 6: Final answer
    x = 18,245.57

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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.