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Finding the Fourth Proportional to 118,302.85, 163,251.78 and 67,314.54

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Solution

The fourth proportional to 118,302.85, 163,251.78 and 67,314.54 is: 92,890.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,302.85 : 163,251.78 = 67,314.54 : x
  2. Step 2: Convert to fraction form
    118,302.85/163,251.78 = 67,314.54/x
  3. Step 3: Cross multiply
    118,302.85x = 163,251.78 × 67,314.54
  4. Step 4: Simplify right side
    118,302.85x = 10,989,218,474.88
  5. Step 5: Solve for x
    x = 10,989,218,474.88/118,302.85
  6. Step 6: Final answer
    x = 92,890.56

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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.