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Finding the Fourth Proportional to 426,398.78, 588,431.19 and 235,412.54

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Solution

The fourth proportional to 426,398.78, 588,431.19 and 235,412.54 is: 324,869.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,398.78 : 588,431.19 = 235,412.54 : x
  2. Step 2: Convert to fraction form
    426,398.78/588,431.19 = 235,412.54/x
  3. Step 3: Cross multiply
    426,398.78x = 588,431.19 × 235,412.54
  4. Step 4: Simplify right side
    426,398.78x = 138,524,081,053.12
  5. Step 5: Solve for x
    x = 138,524,081,053.12/426,398.78
  6. Step 6: Final answer
    x = 324,869.79

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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.