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Finding the Fourth Proportional to 219,906.40, 329,859.60 and 149,922.40

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Solution

The fourth proportional to 219,906.40, 329,859.60 and 149,922.40 is: 224,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,906.40 : 329,859.60 = 149,922.40 : x
  2. Step 2: Convert to fraction form
    219,906.40/329,859.60 = 149,922.40/x
  3. Step 3: Cross multiply
    219,906.40x = 329,859.60 × 149,922.40
  4. Step 4: Simplify right side
    219,906.40x = 49,453,342,895.04
  5. Step 5: Solve for x
    x = 49,453,342,895.04/219,906.40
  6. Step 6: Final answer
    x = 224,883.60

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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.