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Finding the Fourth Proportional to 512,959.96, 769,479.66 and 171,404.57

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Solution

The fourth proportional to 512,959.96, 769,479.66 and 171,404.57 is: 257,120.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,959.96 : 769,479.66 = 171,404.57 : x
  2. Step 2: Convert to fraction form
    512,959.96/769,479.66 = 171,404.57/x
  3. Step 3: Cross multiply
    512,959.96x = 769,479.66 × 171,404.57
  4. Step 4: Simplify right side
    512,959.96x = 131,892,329,284.20
  5. Step 5: Solve for x
    x = 131,892,329,284.20/512,959.96
  6. Step 6: Final answer
    x = 257,120.13

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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.