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Finding the Fourth Proportional to 479,383.50, 719,349.99 and 195,021.56

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Solution

The fourth proportional to 479,383.50, 719,349.99 and 195,021.56 is: 292,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,383.50 : 719,349.99 = 195,021.56 : x
  2. Step 2: Convert to fraction form
    479,383.50/719,349.99 = 195,021.56/x
  3. Step 3: Cross multiply
    479,383.50x = 719,349.99 × 195,021.56
  4. Step 4: Simplify right side
    479,383.50x = 140,288,753,639.03
  5. Step 5: Solve for x
    x = 140,288,753,639.03/479,383.50
  6. Step 6: Final answer
    x = 292,644.10

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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.