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Finding the Fourth Proportional to 40,893.57, 61,311.66 and 15,912.57

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Solution

The fourth proportional to 40,893.57, 61,311.66 and 15,912.57 is: 23,857.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,893.57 : 61,311.66 = 15,912.57 : x
  2. Step 2: Convert to fraction form
    40,893.57/61,311.66 = 15,912.57/x
  3. Step 3: Cross multiply
    40,893.57x = 61,311.66 × 15,912.57
  4. Step 4: Simplify right side
    40,893.57x = 975,626,081.57
  5. Step 5: Solve for x
    x = 975,626,081.57/40,893.57
  6. Step 6: Final answer
    x = 23,857.69

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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.