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Finding the Fourth Proportional to 193,817.20, 290,725.80 and 140,940.40

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Solution

The fourth proportional to 193,817.20, 290,725.80 and 140,940.40 is: 211,410.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,817.20 : 290,725.80 = 140,940.40 : x
  2. Step 2: Convert to fraction form
    193,817.20/290,725.80 = 140,940.40/x
  3. Step 3: Cross multiply
    193,817.20x = 290,725.80 × 140,940.40
  4. Step 4: Simplify right side
    193,817.20x = 40,975,010,542.32
  5. Step 5: Solve for x
    x = 40,975,010,542.32/193,817.20
  6. Step 6: Final answer
    x = 211,410.60

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1.5x scale

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.