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Finding the Fourth Proportional to 413,869.70, 620,977.35 and 133,472.90

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Solution

The fourth proportional to 413,869.70, 620,977.35 and 133,472.90 is: 200,265.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,869.70 : 620,977.35 = 133,472.90 : x
  2. Step 2: Convert to fraction form
    413,869.70/620,977.35 = 133,472.90/x
  3. Step 3: Cross multiply
    413,869.70x = 620,977.35 × 133,472.90
  4. Step 4: Simplify right side
    413,869.70x = 82,883,647,738.82
  5. Step 5: Solve for x
    x = 82,883,647,738.82/413,869.70
  6. Step 6: Final answer
    x = 200,265.08

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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.