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Finding the Fourth Proportional to 263,166.65, 363,147.93 and 155,717.85

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Solution

The fourth proportional to 263,166.65, 363,147.93 and 155,717.85 is: 214,877.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,166.65 : 363,147.93 = 155,717.85 : x
  2. Step 2: Convert to fraction form
    263,166.65/363,147.93 = 155,717.85/x
  3. Step 3: Cross multiply
    263,166.65x = 363,147.93 × 155,717.85
  4. Step 4: Simplify right side
    263,166.65x = 56,548,614,891.55
  5. Step 5: Solve for x
    x = 56,548,614,891.55/263,166.65
  6. Step 6: Final answer
    x = 214,877.59

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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.