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Finding the Fourth Proportional to 256,348.20, 384,911.10 and 197,250.60

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Solution

The fourth proportional to 256,348.20, 384,911.10 and 197,250.60 is: 296,175.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,348.20 : 384,911.10 = 197,250.60 : x
  2. Step 2: Convert to fraction form
    256,348.20/384,911.10 = 197,250.60/x
  3. Step 3: Cross multiply
    256,348.20x = 384,911.10 × 197,250.60
  4. Step 4: Simplify right side
    256,348.20x = 75,923,945,421.66
  5. Step 5: Solve for x
    x = 75,923,945,421.66/256,348.20
  6. Step 6: Final answer
    x = 296,175.07

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1.5x scale

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.