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Finding the Fourth Proportional to 388,257.22, 535,817.11 and 233,255.93

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Solution

The fourth proportional to 388,257.22, 535,817.11 and 233,255.93 is: 321,906.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,257.22 : 535,817.11 = 233,255.93 : x
  2. Step 2: Convert to fraction form
    388,257.22/535,817.11 = 233,255.93/x
  3. Step 3: Cross multiply
    388,257.22x = 535,817.11 × 233,255.93
  4. Step 4: Simplify right side
    388,257.22x = 124,982,519,883.78
  5. Step 5: Solve for x
    x = 124,982,519,883.78/388,257.22
  6. Step 6: Final answer
    x = 321,906.49

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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.