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Finding the Fourth Proportional to 625,915.28, 863,432.52 and 384,245.84

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Solution

The fourth proportional to 625,915.28, 863,432.52 and 384,245.84 is: 530,056.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,915.28 : 863,432.52 = 384,245.84 : x
  2. Step 2: Convert to fraction form
    625,915.28/863,432.52 = 384,245.84/x
  3. Step 3: Cross multiply
    625,915.28x = 863,432.52 × 384,245.84
  4. Step 4: Simplify right side
    625,915.28x = 331,770,353,930.72
  5. Step 5: Solve for x
    x = 331,770,353,930.72/625,915.28
  6. Step 6: Final answer
    x = 530,056.33

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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.