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Finding the Fourth Proportional to 118,722.81, 163,845.48 and 67,745.67

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Solution

The fourth proportional to 118,722.81, 163,845.48 and 67,745.67 is: 93,493.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,722.81 : 163,845.48 = 67,745.67 : x
  2. Step 2: Convert to fraction form
    118,722.81/163,845.48 = 67,745.67/x
  3. Step 3: Cross multiply
    118,722.81x = 163,845.48 × 67,745.67
  4. Step 4: Simplify right side
    118,722.81x = 11,099,821,458.70
  5. Step 5: Solve for x
    x = 11,099,821,458.70/118,722.81
  6. Step 6: Final answer
    x = 93,493.58

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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.