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Finding the Fourth Proportional to 367,042.23, 550,385.36 and 215,288.90

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Solution

The fourth proportional to 367,042.23, 550,385.36 and 215,288.90 is: 322,828.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,042.23 : 550,385.36 = 215,288.90 : x
  2. Step 2: Convert to fraction form
    367,042.23/550,385.36 = 215,288.90/x
  3. Step 3: Cross multiply
    367,042.23x = 550,385.36 × 215,288.90
  4. Step 4: Simplify right side
    367,042.23x = 118,491,854,902.13
  5. Step 5: Solve for x
    x = 118,491,854,902.13/367,042.23
  6. Step 6: Final answer
    x = 322,828.94

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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.