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Finding the Fourth Proportional to 389,555.88, 584,665.38 and 153,063.96

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Solution

The fourth proportional to 389,555.88, 584,665.38 and 153,063.96 is: 229,726.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,555.88 : 584,665.38 = 153,063.96 : x
  2. Step 2: Convert to fraction form
    389,555.88/584,665.38 = 153,063.96/x
  3. Step 3: Cross multiply
    389,555.88x = 584,665.38 × 153,063.96
  4. Step 4: Simplify right side
    389,555.88x = 89,491,198,337.70
  5. Step 5: Solve for x
    x = 89,491,198,337.70/389,555.88
  6. Step 6: Final answer
    x = 229,726.22

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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.