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Finding the Fourth Proportional to 259,666.62, 388,475.28 and 196,668.78

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Solution

The fourth proportional to 259,666.62, 388,475.28 and 196,668.78 is: 294,227.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,666.62 : 388,475.28 = 196,668.78 : x
  2. Step 2: Convert to fraction form
    259,666.62/388,475.28 = 196,668.78/x
  3. Step 3: Cross multiply
    259,666.62x = 388,475.28 × 196,668.78
  4. Step 4: Simplify right side
    259,666.62x = 76,400,959,377.76
  5. Step 5: Solve for x
    x = 76,400,959,377.76/259,666.62
  6. Step 6: Final answer
    x = 294,227.11

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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.