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Finding the Fourth Proportional to 382,142.80, 573,214.20 and 376,237.90

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Solution

The fourth proportional to 382,142.80, 573,214.20 and 376,237.90 is: 564,356.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,142.80 : 573,214.20 = 376,237.90 : x
  2. Step 2: Convert to fraction form
    382,142.80/573,214.20 = 376,237.90/x
  3. Step 3: Cross multiply
    382,142.80x = 573,214.20 × 376,237.90
  4. Step 4: Simplify right side
    382,142.80x = 215,664,906,858.18
  5. Step 5: Solve for x
    x = 215,664,906,858.18/382,142.80
  6. Step 6: Final answer
    x = 564,356.85

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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.