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Finding the Fourth Proportional to 201,880.95, 278,591.97 and 111,245.19

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Solution

The fourth proportional to 201,880.95, 278,591.97 and 111,245.19 is: 153,516.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,880.95 : 278,591.97 = 111,245.19 : x
  2. Step 2: Convert to fraction form
    201,880.95/278,591.97 = 111,245.19/x
  3. Step 3: Cross multiply
    201,880.95x = 278,591.97 × 111,245.19
  4. Step 4: Simplify right side
    201,880.95x = 30,992,016,635.12
  5. Step 5: Solve for x
    x = 30,992,016,635.12/201,880.95
  6. Step 6: Final answer
    x = 153,516.30

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1.5x scale

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.