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Finding the Fourth Proportional to 382,059.72, 573,056.55 and 129,334.82

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Solution

The fourth proportional to 382,059.72, 573,056.55 and 129,334.82 is: 193,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,059.72 : 573,056.55 = 129,334.82 : x
  2. Step 2: Convert to fraction form
    382,059.72/573,056.55 = 129,334.82/x
  3. Step 3: Cross multiply
    382,059.72x = 573,056.55 × 129,334.82
  4. Step 4: Simplify right side
    382,059.72x = 74,116,162,878.79
  5. Step 5: Solve for x
    x = 74,116,162,878.79/382,059.72
  6. Step 6: Final answer
    x = 193,991.04

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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.