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Finding the Fourth Proportional to 423,358.79, 584,226.78 and 239,593.96

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Solution

The fourth proportional to 423,358.79, 584,226.78 and 239,593.96 is: 330,634.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,358.79 : 584,226.78 = 239,593.96 : x
  2. Step 2: Convert to fraction form
    423,358.79/584,226.78 = 239,593.96/x
  3. Step 3: Cross multiply
    423,358.79x = 584,226.78 × 239,593.96
  4. Step 4: Simplify right side
    423,358.79x = 139,977,204,837.12
  5. Step 5: Solve for x
    x = 139,977,204,837.12/423,358.79
  6. Step 6: Final answer
    x = 330,634.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.