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Finding the Fourth Proportional to 543,781.18, 814,429.28 and 259,670.75

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Solution

The fourth proportional to 543,781.18, 814,429.28 and 259,670.75 is: 388,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,781.18 : 814,429.28 = 259,670.75 : x
  2. Step 2: Convert to fraction form
    543,781.18/814,429.28 = 259,670.75/x
  3. Step 3: Cross multiply
    543,781.18x = 814,429.28 × 259,670.75
  4. Step 4: Simplify right side
    543,781.18x = 211,483,458,536.59
  5. Step 5: Solve for x
    x = 211,483,458,536.59/543,781.18
  6. Step 6: Final answer
    x = 388,912.79

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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.