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Finding the Fourth Proportional to 219,940.40, 329,910.60 and 114,964.40

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Solution

The fourth proportional to 219,940.40, 329,910.60 and 114,964.40 is: 172,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,940.40 : 329,910.60 = 114,964.40 : x
  2. Step 2: Convert to fraction form
    219,940.40/329,910.60 = 114,964.40/x
  3. Step 3: Cross multiply
    219,940.40x = 329,910.60 × 114,964.40
  4. Step 4: Simplify right side
    219,940.40x = 37,927,974,182.64
  5. Step 5: Solve for x
    x = 37,927,974,182.64/219,940.40
  6. Step 6: Final answer
    x = 172,446.60

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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.