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Finding the Fourth Proportional to 386,590.37, 533,494.54 and 225,414.29

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Solution

The fourth proportional to 386,590.37, 533,494.54 and 225,414.29 is: 311,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,590.37 : 533,494.54 = 225,414.29 : x
  2. Step 2: Convert to fraction form
    386,590.37/533,494.54 = 225,414.29/x
  3. Step 3: Cross multiply
    386,590.37x = 533,494.54 × 225,414.29
  4. Step 4: Simplify right side
    386,590.37x = 120,257,292,952.98
  5. Step 5: Solve for x
    x = 120,257,292,952.98/386,590.37
  6. Step 6: Final answer
    x = 311,071.62

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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.