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Finding the Fourth Proportional to 3,937.92, 5,906.95 and 1,164.59

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Solution

The fourth proportional to 3,937.92, 5,906.95 and 1,164.59 is: 1,746.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.92 : 5,906.95 = 1,164.59 : x
  2. Step 2: Convert to fraction form
    3,937.92/5,906.95 = 1,164.59/x
  3. Step 3: Cross multiply
    3,937.92x = 5,906.95 × 1,164.59
  4. Step 4: Simplify right side
    3,937.92x = 6,879,145.37
  5. Step 5: Solve for x
    x = 6,879,145.37/3,937.92
  6. Step 6: Final answer
    x = 1,746.90

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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.