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Finding the Fourth Proportional to 339,315.20, 508,195.20 and 331,539.20

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Solution

The fourth proportional to 339,315.20, 508,195.20 and 331,539.20 is: 496,549.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,315.20 : 508,195.20 = 331,539.20 : x
  2. Step 2: Convert to fraction form
    339,315.20/508,195.20 = 331,539.20/x
  3. Step 3: Cross multiply
    339,315.20x = 508,195.20 × 331,539.20
  4. Step 4: Simplify right side
    339,315.20x = 168,486,630,051.84
  5. Step 5: Solve for x
    x = 168,486,630,051.84/339,315.20
  6. Step 6: Final answer
    x = 496,549.02

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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.