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Finding the Fourth Proportional to 18,458.22, 27,683.87 and 4,949.58

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Solution

The fourth proportional to 18,458.22, 27,683.87 and 4,949.58 is: 7,423.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.22 : 27,683.87 = 4,949.58 : x
  2. Step 2: Convert to fraction form
    18,458.22/27,683.87 = 4,949.58/x
  3. Step 3: Cross multiply
    18,458.22x = 27,683.87 × 4,949.58
  4. Step 4: Simplify right side
    18,458.22x = 137,023,504.53
  5. Step 5: Solve for x
    x = 137,023,504.53/18,458.22
  6. Step 6: Final answer
    x = 7,423.44

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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.