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Finding the Fourth Proportional to 193,623.80, 290,435.70 and 188,439.80

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Solution

The fourth proportional to 193,623.80, 290,435.70 and 188,439.80 is: 282,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,623.80 : 290,435.70 = 188,439.80 : x
  2. Step 2: Convert to fraction form
    193,623.80/290,435.70 = 188,439.80/x
  3. Step 3: Cross multiply
    193,623.80x = 290,435.70 × 188,439.80
  4. Step 4: Simplify right side
    193,623.80x = 54,729,645,220.86
  5. Step 5: Solve for x
    x = 54,729,645,220.86/193,623.80
  6. Step 6: Final answer
    x = 282,659.70

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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.