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Finding the Fourth Proportional to 55,937.45, 83,903.45 and 20,874.38

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Solution

The fourth proportional to 55,937.45, 83,903.45 and 20,874.38 is: 31,310.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,937.45 : 83,903.45 = 20,874.38 : x
  2. Step 2: Convert to fraction form
    55,937.45/83,903.45 = 20,874.38/x
  3. Step 3: Cross multiply
    55,937.45x = 83,903.45 × 20,874.38
  4. Step 4: Simplify right side
    55,937.45x = 1,751,431,974.72
  5. Step 5: Solve for x
    x = 1,751,431,974.72/55,937.45
  6. Step 6: Final answer
    x = 31,310.54

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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.