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Finding the Fourth Proportional to 118,169.11, 163,087.16 and 67,189.48

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Solution

The fourth proportional to 118,169.11, 163,087.16 and 67,189.48 is: 92,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,169.11 : 163,087.16 = 67,189.48 : x
  2. Step 2: Convert to fraction form
    118,169.11/163,087.16 = 67,189.48/x
  3. Step 3: Cross multiply
    118,169.11x = 163,087.16 × 67,189.48
  4. Step 4: Simplify right side
    118,169.11x = 10,957,741,475.08
  5. Step 5: Solve for x
    x = 10,957,741,475.08/118,169.11
  6. Step 6: Final answer
    x = 92,729.32

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1.5x scale

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.