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Finding the Fourth Proportional to 668,915.73, 923,104.34 and 382,441.82

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Solution

The fourth proportional to 668,915.73, 923,104.34 and 382,441.82 is: 527,770.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,915.73 : 923,104.34 = 382,441.82 : x
  2. Step 2: Convert to fraction form
    668,915.73/923,104.34 = 382,441.82/x
  3. Step 3: Cross multiply
    668,915.73x = 923,104.34 × 382,441.82
  4. Step 4: Simplify right side
    668,915.73x = 353,033,698,745.93
  5. Step 5: Solve for x
    x = 353,033,698,745.93/668,915.73
  6. Step 6: Final answer
    x = 527,770.07

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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.