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Finding the Fourth Proportional to 512,663.30, 768,764.55 and 197,015.30

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Solution

The fourth proportional to 512,663.30, 768,764.55 and 197,015.30 is: 295,434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,663.30 : 768,764.55 = 197,015.30 : x
  2. Step 2: Convert to fraction form
    512,663.30/768,764.55 = 197,015.30/x
  3. Step 3: Cross multiply
    512,663.30x = 768,764.55 × 197,015.30
  4. Step 4: Simplify right side
    512,663.30x = 151,458,378,447.62
  5. Step 5: Solve for x
    x = 151,458,378,447.62/512,663.30
  6. Step 6: Final answer
    x = 295,434.41

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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.