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Finding the Fourth Proportional to 512,959.77, 769,479.38 and 171,404.38

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Solution

The fourth proportional to 512,959.77, 769,479.38 and 171,404.38 is: 257,119.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,959.77 : 769,479.38 = 171,404.38 : x
  2. Step 2: Convert to fraction form
    512,959.77/769,479.38 = 171,404.38/x
  3. Step 3: Cross multiply
    512,959.77x = 769,479.38 × 171,404.38
  4. Step 4: Simplify right side
    512,959.77x = 131,892,136,378.76
  5. Step 5: Solve for x
    x = 131,892,136,378.76/512,959.77
  6. Step 6: Final answer
    x = 257,119.84

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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.