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Finding the Fourth Proportional to 353,104.65, 487,278.67 and 191,963.72

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Solution

The fourth proportional to 353,104.65, 487,278.67 and 191,963.72 is: 264,906.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,104.65 : 487,278.67 = 191,963.72 : x
  2. Step 2: Convert to fraction form
    353,104.65/487,278.67 = 191,963.72/x
  3. Step 3: Cross multiply
    353,104.65x = 487,278.67 × 191,963.72
  4. Step 4: Simplify right side
    353,104.65x = 93,539,826,169.85
  5. Step 5: Solve for x
    x = 93,539,826,169.85/353,104.65
  6. Step 6: Final answer
    x = 264,906.81

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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.