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Finding the Fourth Proportional to 7,228.70, 9,974.37 and 4,084.82

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Solution

The fourth proportional to 7,228.70, 9,974.37 and 4,084.82 is: 5,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,228.70 : 9,974.37 = 4,084.82 : x
  2. Step 2: Convert to fraction form
    7,228.70/9,974.37 = 4,084.82/x
  3. Step 3: Cross multiply
    7,228.70x = 9,974.37 × 4,084.82
  4. Step 4: Simplify right side
    7,228.70x = 40,743,506.06
  5. Step 5: Solve for x
    x = 40,743,506.06/7,228.70
  6. Step 6: Final answer
    x = 5,636.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.