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Finding the Fourth Proportional to 167,121.20, 250,876.20 and 100,636.40

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Solution

The fourth proportional to 167,121.20, 250,876.20 and 100,636.40 is: 151,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,121.20 : 250,876.20 = 100,636.40 : x
  2. Step 2: Convert to fraction form
    167,121.20/250,876.20 = 100,636.40/x
  3. Step 3: Cross multiply
    167,121.20x = 250,876.20 × 100,636.40
  4. Step 4: Simplify right side
    167,121.20x = 25,247,277,613.68
  5. Step 5: Solve for x
    x = 25,247,277,613.68/167,121.20
  6. Step 6: Final answer
    x = 151,071.66

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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.