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Finding the Fourth Proportional to 2,693.64, 4,040.46 and 745.98

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Solution

The fourth proportional to 2,693.64, 4,040.46 and 745.98 is: 1,118.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.64 : 4,040.46 = 745.98 : x
  2. Step 2: Convert to fraction form
    2,693.64/4,040.46 = 745.98/x
  3. Step 3: Cross multiply
    2,693.64x = 4,040.46 × 745.98
  4. Step 4: Simplify right side
    2,693.64x = 3,014,102.35
  5. Step 5: Solve for x
    x = 3,014,102.35/2,693.64
  6. Step 6: Final answer
    x = 1,118.97

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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.