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Finding the Fourth Proportional to 413,522.40, 620,391.60 and 133,046.40

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Solution

The fourth proportional to 413,522.40, 620,391.60 and 133,046.40 is: 199,604.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,522.40 : 620,391.60 = 133,046.40 : x
  2. Step 2: Convert to fraction form
    413,522.40/620,391.60 = 133,046.40/x
  3. Step 3: Cross multiply
    413,522.40x = 620,391.60 × 133,046.40
  4. Step 4: Simplify right side
    413,522.40x = 82,540,868,970.24
  5. Step 5: Solve for x
    x = 82,540,868,970.24/413,522.40
  6. Step 6: Final answer
    x = 199,604.35

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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.