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Finding the Fourth Proportional to 100,874.92, 151,111.90 and 92,608.06

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Solution

The fourth proportional to 100,874.92, 151,111.90 and 92,608.06 is: 138,728.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,874.92 : 151,111.90 = 92,608.06 : x
  2. Step 2: Convert to fraction form
    100,874.92/151,111.90 = 92,608.06/x
  3. Step 3: Cross multiply
    100,874.92x = 151,111.90 × 92,608.06
  4. Step 4: Simplify right side
    100,874.92x = 13,994,180,183.69
  5. Step 5: Solve for x
    x = 13,994,180,183.69/100,874.92
  6. Step 6: Final answer
    x = 138,728.04

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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.