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Finding the Fourth Proportional to 512,179.20, 768,268.80 and 196,643.70

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Solution

The fourth proportional to 512,179.20, 768,268.80 and 196,643.70 is: 294,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,179.20 : 768,268.80 = 196,643.70 : x
  2. Step 2: Convert to fraction form
    512,179.20/768,268.80 = 196,643.70/x
  3. Step 3: Cross multiply
    512,179.20x = 768,268.80 × 196,643.70
  4. Step 4: Simplify right side
    512,179.20x = 151,075,219,426.56
  5. Step 5: Solve for x
    x = 151,075,219,426.56/512,179.20
  6. Step 6: Final answer
    x = 294,965.55

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Similar ratio
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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.