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Finding the Fourth Proportional to 358,817.85, 538,039.89 and 169,227.31

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Solution

The fourth proportional to 358,817.85, 538,039.89 and 169,227.31 is: 253,752.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,817.85 : 538,039.89 = 169,227.31 : x
  2. Step 2: Convert to fraction form
    358,817.85/538,039.89 = 169,227.31/x
  3. Step 3: Cross multiply
    358,817.85x = 538,039.89 × 169,227.31
  4. Step 4: Simplify right side
    358,817.85x = 91,051,042,921.12
  5. Step 5: Solve for x
    x = 91,051,042,921.12/358,817.85
  6. Step 6: Final answer
    x = 253,752.82

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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.