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Finding the Fourth Proportional to 512,997.60, 768,621.60 and 437,764.80

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Solution

The fourth proportional to 512,997.60, 768,621.60 and 437,764.80 is: 655,900.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,997.60 : 768,621.60 = 437,764.80 : x
  2. Step 2: Convert to fraction form
    512,997.60/768,621.60 = 437,764.80/x
  3. Step 3: Cross multiply
    512,997.60x = 768,621.60 × 437,764.80
  4. Step 4: Simplify right side
    512,997.60x = 336,475,480,999.68
  5. Step 5: Solve for x
    x = 336,475,480,999.68/512,997.60
  6. Step 6: Final answer
    x = 655,900.69

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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.