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Finding the Fourth Proportional to 436,648.47, 654,972.63 and 121,105.41

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Solution

The fourth proportional to 436,648.47, 654,972.63 and 121,105.41 is: 181,658.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,648.47 : 654,972.63 = 121,105.41 : x
  2. Step 2: Convert to fraction form
    436,648.47/654,972.63 = 121,105.41/x
  3. Step 3: Cross multiply
    436,648.47x = 654,972.63 × 121,105.41
  4. Step 4: Simplify right side
    436,648.47x = 79,320,728,894.93
  5. Step 5: Solve for x
    x = 79,320,728,894.93/436,648.47
  6. Step 6: Final answer
    x = 181,658.09

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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.