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Finding the Fourth Proportional to 383,159.97, 528,738.44 and 281,611.89

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Solution

The fourth proportional to 383,159.97, 528,738.44 and 281,611.89 is: 388,608.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,159.97 : 528,738.44 = 281,611.89 : x
  2. Step 2: Convert to fraction form
    383,159.97/528,738.44 = 281,611.89/x
  3. Step 3: Cross multiply
    383,159.97x = 528,738.44 × 281,611.89
  4. Step 4: Simplify right side
    383,159.97x = 148,899,029,995.99
  5. Step 5: Solve for x
    x = 148,899,029,995.99/383,159.97
  6. Step 6: Final answer
    x = 388,608.00

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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.