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Finding the Fourth Proportional to 417,435.22, 625,318.13 and 192,487.69

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Solution

The fourth proportional to 417,435.22, 625,318.13 and 192,487.69 is: 288,346.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,435.22 : 625,318.13 = 192,487.69 : x
  2. Step 2: Convert to fraction form
    417,435.22/625,318.13 = 192,487.69/x
  3. Step 3: Cross multiply
    417,435.22x = 625,318.13 × 192,487.69
  4. Step 4: Simplify right side
    417,435.22x = 120,366,042,538.94
  5. Step 5: Solve for x
    x = 120,366,042,538.94/417,435.22
  6. Step 6: Final answer
    x = 288,346.64

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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.