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Finding the Fourth Proportional to 338,980.52, 467,791.82 and 186,021.28

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Solution

The fourth proportional to 338,980.52, 467,791.82 and 186,021.28 is: 256,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,980.52 : 467,791.82 = 186,021.28 : x
  2. Step 2: Convert to fraction form
    338,980.52/467,791.82 = 186,021.28/x
  3. Step 3: Cross multiply
    338,980.52x = 467,791.82 × 186,021.28
  4. Step 4: Simplify right side
    338,980.52x = 87,019,233,129.93
  5. Step 5: Solve for x
    x = 87,019,233,129.93/338,980.52
  6. Step 6: Final answer
    x = 256,708.65

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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.