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Finding the Fourth Proportional to 413,816.30, 620,666.85 and 133,361.90

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Solution

The fourth proportional to 413,816.30, 620,666.85 and 133,361.90 is: 200,024.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,816.30 : 620,666.85 = 133,361.90 : x
  2. Step 2: Convert to fraction form
    413,816.30/620,666.85 = 133,361.90/x
  3. Step 3: Cross multiply
    413,816.30x = 620,666.85 × 133,361.90
  4. Step 4: Simplify right side
    413,816.30x = 82,773,310,383.02
  5. Step 5: Solve for x
    x = 82,773,310,383.02/413,816.30
  6. Step 6: Final answer
    x = 200,024.29

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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.