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Finding the Fourth Proportional to 511,136.04, 705,372.54 and 281,701.68

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Solution

The fourth proportional to 511,136.04, 705,372.54 and 281,701.68 is: 388,750.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,136.04 : 705,372.54 = 281,701.68 : x
  2. Step 2: Convert to fraction form
    511,136.04/705,372.54 = 281,701.68/x
  3. Step 3: Cross multiply
    511,136.04x = 705,372.54 × 281,701.68
  4. Step 4: Simplify right side
    511,136.04x = 198,704,629,543.87
  5. Step 5: Solve for x
    x = 198,704,629,543.87/511,136.04
  6. Step 6: Final answer
    x = 388,750.97

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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.