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Finding the Fourth Proportional to 74,830.71, 111,584.47 and 74,163.67

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Solution

The fourth proportional to 74,830.71, 111,584.47 and 74,163.67 is: 110,589.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,830.71 : 111,584.47 = 74,163.67 : x
  2. Step 2: Convert to fraction form
    74,830.71/111,584.47 = 74,163.67/x
  3. Step 3: Cross multiply
    74,830.71x = 111,584.47 × 74,163.67
  4. Step 4: Simplify right side
    74,830.71x = 8,275,513,439.39
  5. Step 5: Solve for x
    x = 8,275,513,439.39/74,830.71
  6. Step 6: Final answer
    x = 110,589.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.