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Finding the Fourth Proportional to 417,345.73, 625,945.89 and 192,686.97

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Solution

The fourth proportional to 417,345.73, 625,945.89 and 192,686.97 is: 288,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,345.73 : 625,945.89 = 192,686.97 : x
  2. Step 2: Convert to fraction form
    417,345.73/625,945.89 = 192,686.97/x
  3. Step 3: Cross multiply
    417,345.73x = 625,945.89 × 192,686.97
  4. Step 4: Simplify right side
    417,345.73x = 120,611,616,928.05
  5. Step 5: Solve for x
    x = 120,611,616,928.05/417,345.73
  6. Step 6: Final answer
    x = 288,996.89

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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.