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Finding the Fourth Proportional to 629,939.17, 869,669.81 and 436,627.81

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Solution

The fourth proportional to 629,939.17, 869,669.81 and 436,627.81 is: 602,791.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,939.17 : 869,669.81 = 436,627.81 : x
  2. Step 2: Convert to fraction form
    629,939.17/869,669.81 = 436,627.81/x
  3. Step 3: Cross multiply
    629,939.17x = 869,669.81 × 436,627.81
  4. Step 4: Simplify right side
    629,939.17x = 379,722,022,380.28
  5. Step 5: Solve for x
    x = 379,722,022,380.28/629,939.17
  6. Step 6: Final answer
    x = 602,791.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.