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Finding the Fourth Proportional to 436,757.83, 655,136.54 and 121,214.63

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Solution

The fourth proportional to 436,757.83, 655,136.54 and 121,214.63 is: 181,821.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,757.83 : 655,136.54 = 121,214.63 : x
  2. Step 2: Convert to fraction form
    436,757.83/655,136.54 = 121,214.63/x
  3. Step 3: Cross multiply
    436,757.83x = 655,136.54 × 121,214.63
  4. Step 4: Simplify right side
    436,757.83x = 79,412,134,781.90
  5. Step 5: Solve for x
    x = 79,412,134,781.90/436,757.83
  6. Step 6: Final answer
    x = 181,821.89

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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.