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Finding the Fourth Proportional to 267,930.20, 401,749.30 and 80,917.40

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Solution

The fourth proportional to 267,930.20, 401,749.30 and 80,917.40 is: 121,332.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,930.20 : 401,749.30 = 80,917.40 : x
  2. Step 2: Convert to fraction form
    267,930.20/401,749.30 = 80,917.40/x
  3. Step 3: Cross multiply
    267,930.20x = 401,749.30 × 80,917.40
  4. Step 4: Simplify right side
    267,930.20x = 32,508,508,807.82
  5. Step 5: Solve for x
    x = 32,508,508,807.82/267,930.20
  6. Step 6: Final answer
    x = 121,332.01

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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.