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Finding the Fourth Proportional to 3,395.98, 5,093.97 and 931.06

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Solution

The fourth proportional to 3,395.98, 5,093.97 and 931.06 is: 1,396.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.98 : 5,093.97 = 931.06 : x
  2. Step 2: Convert to fraction form
    3,395.98/5,093.97 = 931.06/x
  3. Step 3: Cross multiply
    3,395.98x = 5,093.97 × 931.06
  4. Step 4: Simplify right side
    3,395.98x = 4,742,791.71
  5. Step 5: Solve for x
    x = 4,742,791.71/3,395.98
  6. Step 6: Final answer
    x = 1,396.59

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Similar ratio
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1.5x scale

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.