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Finding the Fourth Proportional to 2,093.58, 3,138.21 and 706.46

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Solution

The fourth proportional to 2,093.58, 3,138.21 and 706.46 is: 1,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,093.58 : 3,138.21 = 706.46 : x
  2. Step 2: Convert to fraction form
    2,093.58/3,138.21 = 706.46/x
  3. Step 3: Cross multiply
    2,093.58x = 3,138.21 × 706.46
  4. Step 4: Simplify right side
    2,093.58x = 2,217,004.15
  5. Step 5: Solve for x
    x = 2,217,004.15/2,093.58
  6. Step 6: Final answer
    x = 1,058.95

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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.