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Finding the Fourth Proportional to 413,817.80, 620,669.10 and 133,363.40

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Solution

The fourth proportional to 413,817.80, 620,669.10 and 133,363.40 is: 200,026.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,817.80 : 620,669.10 = 133,363.40 : x
  2. Step 2: Convert to fraction form
    413,817.80/620,669.10 = 133,363.40/x
  3. Step 3: Cross multiply
    413,817.80x = 620,669.10 × 133,363.40
  4. Step 4: Simplify right side
    413,817.80x = 82,774,541,450.94
  5. Step 5: Solve for x
    x = 82,774,541,450.94/413,817.80
  6. Step 6: Final answer
    x = 200,026.54

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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.