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Finding the Fourth Proportional to 512,277.72, 768,405.76 and 170,745.88

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Solution

The fourth proportional to 512,277.72, 768,405.76 and 170,745.88 is: 256,115.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,277.72 : 768,405.76 = 170,745.88 : x
  2. Step 2: Convert to fraction form
    512,277.72/768,405.76 = 170,745.88/x
  3. Step 3: Cross multiply
    512,277.72x = 768,405.76 × 170,745.88
  4. Step 4: Simplify right side
    512,277.72x = 131,202,117,688.27
  5. Step 5: Solve for x
    x = 131,202,117,688.27/512,277.72
  6. Step 6: Final answer
    x = 256,115.21

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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.