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Finding the Fourth Proportional to 133,820.08, 200,840.55 and 67,279.12

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Solution

The fourth proportional to 133,820.08, 200,840.55 and 67,279.12 is: 100,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,820.08 : 200,840.55 = 67,279.12 : x
  2. Step 2: Convert to fraction form
    133,820.08/200,840.55 = 67,279.12/x
  3. Step 3: Cross multiply
    133,820.08x = 200,840.55 × 67,279.12
  4. Step 4: Simplify right side
    133,820.08x = 13,512,375,464.32
  5. Step 5: Solve for x
    x = 13,512,375,464.32/133,820.08
  6. Step 6: Final answer
    x = 100,974.20

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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.