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Finding the Fourth Proportional to 193,057.28, 289,650.72 and 104,318.72

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Solution

The fourth proportional to 193,057.28, 289,650.72 and 104,318.72 is: 156,513.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,057.28 : 289,650.72 = 104,318.72 : x
  2. Step 2: Convert to fraction form
    193,057.28/289,650.72 = 104,318.72/x
  3. Step 3: Cross multiply
    193,057.28x = 289,650.72 × 104,318.72
  4. Step 4: Simplify right side
    193,057.28x = 30,215,992,357.48
  5. Step 5: Solve for x
    x = 30,215,992,357.48/193,057.28
  6. Step 6: Final answer
    x = 156,513.09

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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.