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Finding the Fourth Proportional to 367,042.30, 550,385.43 and 215,288.98

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Solution

The fourth proportional to 367,042.30, 550,385.43 and 215,288.98 is: 322,829.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,042.30 : 550,385.43 = 215,288.98 : x
  2. Step 2: Convert to fraction form
    367,042.30/550,385.43 = 215,288.98/x
  3. Step 3: Cross multiply
    367,042.30x = 550,385.43 × 215,288.98
  4. Step 4: Simplify right side
    367,042.30x = 118,491,917,831.56
  5. Step 5: Solve for x
    x = 118,491,917,831.56/367,042.30
  6. Step 6: Final answer
    x = 322,829.05

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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.