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Finding the Fourth Proportional to 2,093.99, 3,140.98 and 938.93

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Solution

The fourth proportional to 2,093.99, 3,140.98 and 938.93 is: 1,408.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,093.99 : 3,140.98 = 938.93 : x
  2. Step 2: Convert to fraction form
    2,093.99/3,140.98 = 938.93/x
  3. Step 3: Cross multiply
    2,093.99x = 3,140.98 × 938.93
  4. Step 4: Simplify right side
    2,093.99x = 2,949,160.35
  5. Step 5: Solve for x
    x = 2,949,160.35/2,093.99
  6. Step 6: Final answer
    x = 1,408.39

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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.