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Finding the Fourth Proportional to 512,409.54, 768,679.90 and 196,825.44

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Solution

The fourth proportional to 512,409.54, 768,679.90 and 196,825.44 is: 295,263.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,409.54 : 768,679.90 = 196,825.44 : x
  2. Step 2: Convert to fraction form
    512,409.54/768,679.90 = 196,825.44/x
  3. Step 3: Cross multiply
    512,409.54x = 768,679.90 × 196,825.44
  4. Step 4: Simplify right side
    512,409.54x = 151,295,759,536.66
  5. Step 5: Solve for x
    x = 151,295,759,536.66/512,409.54
  6. Step 6: Final answer
    x = 295,263.35

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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.