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Finding the Fourth Proportional to 193,571.21, 290,243.81 and 75,104.16

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Solution

The fourth proportional to 193,571.21, 290,243.81 and 75,104.16 is: 112,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,571.21 : 290,243.81 = 75,104.16 : x
  2. Step 2: Convert to fraction form
    193,571.21/290,243.81 = 75,104.16/x
  3. Step 3: Cross multiply
    193,571.21x = 290,243.81 × 75,104.16
  4. Step 4: Simplify right side
    193,571.21x = 21,798,517,169.73
  5. Step 5: Solve for x
    x = 21,798,517,169.73/193,571.21
  6. Step 6: Final answer
    x = 112,612.40

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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.