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Finding the Fourth Proportional to 185,638.81, 256,181.81 and 100,755.87

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Solution

The fourth proportional to 185,638.81, 256,181.81 and 100,755.87 is: 139,043.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,638.81 : 256,181.81 = 100,755.87 : x
  2. Step 2: Convert to fraction form
    185,638.81/256,181.81 = 100,755.87/x
  3. Step 3: Cross multiply
    185,638.81x = 256,181.81 × 100,755.87
  4. Step 4: Simplify right side
    185,638.81x = 25,811,821,144.72
  5. Step 5: Solve for x
    x = 25,811,821,144.72/185,638.81
  6. Step 6: Final answer
    x = 139,043.24

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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.