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Finding the Fourth Proportional to 638,327.43, 957,489.36 and 189,083.31

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Solution

The fourth proportional to 638,327.43, 957,489.36 and 189,083.31 is: 283,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,327.43 : 957,489.36 = 189,083.31 : x
  2. Step 2: Convert to fraction form
    638,327.43/957,489.36 = 189,083.31/x
  3. Step 3: Cross multiply
    638,327.43x = 957,489.36 × 189,083.31
  4. Step 4: Simplify right side
    638,327.43x = 181,045,257,478.58
  5. Step 5: Solve for x
    x = 181,045,257,478.58/638,327.43
  6. Step 6: Final answer
    x = 283,624.44

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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.