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Finding the Fourth Proportional to 339,953.72, 469,144.97 and 186,995.85

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Solution

The fourth proportional to 339,953.72, 469,144.97 and 186,995.85 is: 258,059.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,953.72 : 469,144.97 = 186,995.85 : x
  2. Step 2: Convert to fraction form
    339,953.72/469,144.97 = 186,995.85/x
  3. Step 3: Cross multiply
    339,953.72x = 469,144.97 × 186,995.85
  4. Step 4: Simplify right side
    339,953.72x = 87,728,162,438.37
  5. Step 5: Solve for x
    x = 87,728,162,438.37/339,953.72
  6. Step 6: Final answer
    x = 258,059.13

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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.