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Finding the Fourth Proportional to 167,921.20, 251,663.10 and 67,999.60

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Solution

The fourth proportional to 167,921.20, 251,663.10 and 67,999.60 is: 101,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,921.20 : 251,663.10 = 67,999.60 : x
  2. Step 2: Convert to fraction form
    167,921.20/251,663.10 = 67,999.60/x
  3. Step 3: Cross multiply
    167,921.20x = 251,663.10 × 67,999.60
  4. Step 4: Simplify right side
    167,921.20x = 17,112,990,134.76
  5. Step 5: Solve for x
    x = 17,112,990,134.76/167,921.20
  6. Step 6: Final answer
    x = 101,910.84

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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.