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Finding the Fourth Proportional to 193,831.20, 290,401.20 and 166,183.20

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Solution

The fourth proportional to 193,831.20, 290,401.20 and 166,183.20 is: 248,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,831.20 : 290,401.20 = 166,183.20 : x
  2. Step 2: Convert to fraction form
    193,831.20/290,401.20 = 166,183.20/x
  3. Step 3: Cross multiply
    193,831.20x = 290,401.20 × 166,183.20
  4. Step 4: Simplify right side
    193,831.20x = 48,259,800,699.84
  5. Step 5: Solve for x
    x = 48,259,800,699.84/193,831.20
  6. Step 6: Final answer
    x = 248,978.50

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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.