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Finding the Fourth Proportional to 167,831.80, 251,747.70 and 161,380.60

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Solution

The fourth proportional to 167,831.80, 251,747.70 and 161,380.60 is: 242,070.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,831.80 : 251,747.70 = 161,380.60 : x
  2. Step 2: Convert to fraction form
    167,831.80/251,747.70 = 161,380.60/x
  3. Step 3: Cross multiply
    167,831.80x = 251,747.70 × 161,380.60
  4. Step 4: Simplify right side
    167,831.80x = 40,627,194,874.62
  5. Step 5: Solve for x
    x = 40,627,194,874.62/167,831.80
  6. Step 6: Final answer
    x = 242,070.90

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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.