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Finding the Fourth Proportional to 339,781.18, 468,888.11 and 186,819.21

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Solution

The fourth proportional to 339,781.18, 468,888.11 and 186,819.21 is: 257,805.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,781.18 : 468,888.11 = 186,819.21 : x
  2. Step 2: Convert to fraction form
    339,781.18/468,888.11 = 186,819.21/x
  3. Step 3: Cross multiply
    339,781.18x = 468,888.11 × 186,819.21
  4. Step 4: Simplify right side
    339,781.18x = 87,597,306,288.59
  5. Step 5: Solve for x
    x = 87,597,306,288.59/339,781.18
  6. Step 6: Final answer
    x = 257,805.06

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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.