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Finding the Fourth Proportional to 512,192.20, 768,000.30 and 196,659.40

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Solution

The fourth proportional to 512,192.20, 768,000.30 and 196,659.40 is: 294,878.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,192.20 : 768,000.30 = 196,659.40 : x
  2. Step 2: Convert to fraction form
    512,192.20/768,000.30 = 196,659.40/x
  3. Step 3: Cross multiply
    512,192.20x = 768,000.30 × 196,659.40
  4. Step 4: Simplify right side
    512,192.20x = 151,034,478,197.82
  5. Step 5: Solve for x
    x = 151,034,478,197.82/512,192.20
  6. Step 6: Final answer
    x = 294,878.52

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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.