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Finding the Fourth Proportional to 263,915.05, 395,867.03 and 64,236.55

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Solution

The fourth proportional to 263,915.05, 395,867.03 and 64,236.55 is: 96,353.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,915.05 : 395,867.03 = 64,236.55 : x
  2. Step 2: Convert to fraction form
    263,915.05/395,867.03 = 64,236.55/x
  3. Step 3: Cross multiply
    263,915.05x = 395,867.03 × 64,236.55
  4. Step 4: Simplify right side
    263,915.05x = 25,429,132,265.95
  5. Step 5: Solve for x
    x = 25,429,132,265.95/263,915.05
  6. Step 6: Final answer
    x = 96,353.48

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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.