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Finding the Fourth Proportional to 201,797.73, 278,481.19 and 111,153.95

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Solution

The fourth proportional to 201,797.73, 278,481.19 and 111,153.95 is: 153,392.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,797.73 : 278,481.19 = 111,153.95 : x
  2. Step 2: Convert to fraction form
    201,797.73/278,481.19 = 111,153.95/x
  3. Step 3: Cross multiply
    201,797.73x = 278,481.19 × 111,153.95
  4. Step 4: Simplify right side
    201,797.73x = 30,954,283,068.40
  5. Step 5: Solve for x
    x = 30,954,283,068.40/201,797.73
  6. Step 6: Final answer
    x = 153,392.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.