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Finding the Fourth Proportional to 201,800.94, 278,194.41 and 141,183.78

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Solution

The fourth proportional to 201,800.94, 278,194.41 and 141,183.78 is: 194,630.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,800.94 : 278,194.41 = 141,183.78 : x
  2. Step 2: Convert to fraction form
    201,800.94/278,194.41 = 141,183.78/x
  3. Step 3: Cross multiply
    201,800.94x = 278,194.41 × 141,183.78
  4. Step 4: Simplify right side
    201,800.94x = 39,276,538,378.67
  5. Step 5: Solve for x
    x = 39,276,538,378.67/201,800.94
  6. Step 6: Final answer
    x = 194,630.11

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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.