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Finding the Fourth Proportional to 512,351.10, 768,526.65 and 263,519.10

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Solution

The fourth proportional to 512,351.10, 768,526.65 and 263,519.10 is: 395,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,351.10 : 768,526.65 = 263,519.10 : x
  2. Step 2: Convert to fraction form
    512,351.10/768,526.65 = 263,519.10/x
  3. Step 3: Cross multiply
    512,351.10x = 768,526.65 × 263,519.10
  4. Step 4: Simplify right side
    512,351.10x = 202,521,451,134.02
  5. Step 5: Solve for x
    x = 202,521,451,134.02/512,351.10
  6. Step 6: Final answer
    x = 395,278.65

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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.