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Finding the Fourth Proportional to 512,530.20, 768,795.30 and 291,346.20

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Solution

The fourth proportional to 512,530.20, 768,795.30 and 291,346.20 is: 437,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,530.20 : 768,795.30 = 291,346.20 : x
  2. Step 2: Convert to fraction form
    512,530.20/768,795.30 = 291,346.20/x
  3. Step 3: Cross multiply
    512,530.20x = 768,795.30 × 291,346.20
  4. Step 4: Simplify right side
    512,530.20x = 223,985,589,232.86
  5. Step 5: Solve for x
    x = 223,985,589,232.86/512,530.20
  6. Step 6: Final answer
    x = 437,019.30

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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.