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Finding the Fourth Proportional to 331,668.96, 457,715.52 and 188,453.28

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Solution

The fourth proportional to 331,668.96, 457,715.52 and 188,453.28 is: 260,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,668.96 : 457,715.52 = 188,453.28 : x
  2. Step 2: Convert to fraction form
    331,668.96/457,715.52 = 188,453.28/x
  3. Step 3: Cross multiply
    331,668.96x = 457,715.52 × 188,453.28
  4. Step 4: Simplify right side
    331,668.96x = 86,257,991,050.91
  5. Step 5: Solve for x
    x = 86,257,991,050.91/331,668.96
  6. Step 6: Final answer
    x = 260,072.55

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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.