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Finding the Fourth Proportional to 436,951.68, 655,462.89 and 121,408.62

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Solution

The fourth proportional to 436,951.68, 655,462.89 and 121,408.62 is: 182,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,951.68 : 655,462.89 = 121,408.62 : x
  2. Step 2: Convert to fraction form
    436,951.68/655,462.89 = 121,408.62/x
  3. Step 3: Cross multiply
    436,951.68x = 655,462.89 × 121,408.62
  4. Step 4: Simplify right side
    436,951.68x = 79,578,844,936.11
  5. Step 5: Solve for x
    x = 79,578,844,936.11/436,951.68
  6. Step 6: Final answer
    x = 182,122.76

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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.