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Finding the Fourth Proportional to 382,046.35, 573,036.51 and 129,321.43

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Solution

The fourth proportional to 382,046.35, 573,036.51 and 129,321.43 is: 193,970.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,046.35 : 573,036.51 = 129,321.43 : x
  2. Step 2: Convert to fraction form
    382,046.35/573,036.51 = 129,321.43/x
  3. Step 3: Cross multiply
    382,046.35x = 573,036.51 × 129,321.43
  4. Step 4: Simplify right side
    382,046.35x = 74,105,900,915.41
  5. Step 5: Solve for x
    x = 74,105,900,915.41/382,046.35
  6. Step 6: Final answer
    x = 193,970.97

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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.