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Finding the Fourth Proportional to 436,757.77, 655,136.45 and 121,214.57

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Solution

The fourth proportional to 436,757.77, 655,136.45 and 121,214.57 is: 181,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,757.77 : 655,136.45 = 121,214.57 : x
  2. Step 2: Convert to fraction form
    436,757.77/655,136.45 = 121,214.57/x
  3. Step 3: Cross multiply
    436,757.77x = 655,136.45 × 121,214.57
  4. Step 4: Simplify right side
    436,757.77x = 79,412,082,472.00
  5. Step 5: Solve for x
    x = 79,412,082,472.00/436,757.77
  6. Step 6: Final answer
    x = 181,821.80

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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.