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Finding the Fourth Proportional to 512,662.80, 768,763.80 and 197,014.80

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Solution

The fourth proportional to 512,662.80, 768,763.80 and 197,014.80 is: 295,433.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,662.80 : 768,763.80 = 197,014.80 : x
  2. Step 2: Convert to fraction form
    512,662.80/768,763.80 = 197,014.80/x
  3. Step 3: Cross multiply
    512,662.80x = 768,763.80 × 197,014.80
  4. Step 4: Simplify right side
    512,662.80x = 151,457,846,304.24
  5. Step 5: Solve for x
    x = 151,457,846,304.24/512,662.80
  6. Step 6: Final answer
    x = 295,433.66

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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.