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Finding the Fourth Proportional to 1,898.89, 2,620.76 and 1,583.60

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Solution

The fourth proportional to 1,898.89, 2,620.76 and 1,583.60 is: 2,185.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.89 : 2,620.76 = 1,583.60 : x
  2. Step 2: Convert to fraction form
    1,898.89/2,620.76 = 1,583.60/x
  3. Step 3: Cross multiply
    1,898.89x = 2,620.76 × 1,583.60
  4. Step 4: Simplify right side
    1,898.89x = 4,150,226.39
  5. Step 5: Solve for x
    x = 4,150,226.39/1,898.89
  6. Step 6: Final answer
    x = 2,185.61

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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.