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Finding the Fourth Proportional to 185,638.56, 256,181.46 and 100,755.63

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Solution

The fourth proportional to 185,638.56, 256,181.46 and 100,755.63 is: 139,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,638.56 : 256,181.46 = 100,755.63 : x
  2. Step 2: Convert to fraction form
    185,638.56/256,181.46 = 100,755.63/x
  3. Step 3: Cross multiply
    185,638.56x = 256,181.46 × 100,755.63
  4. Step 4: Simplify right side
    185,638.56x = 25,811,724,396.62
  5. Step 5: Solve for x
    x = 25,811,724,396.62/185,638.56
  6. Step 6: Final answer
    x = 139,042.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.