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Finding the Fourth Proportional to 2,043.16, 3,065.46 and 889

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Solution

The fourth proportional to 2,043.16, 3,065.46 and 889 is: 1,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.16 : 3,065.46 = 889 : x
  2. Step 2: Convert to fraction form
    2,043.16/3,065.46 = 889/x
  3. Step 3: Cross multiply
    2,043.16x = 3,065.46 × 889
  4. Step 4: Simplify right side
    2,043.16x = 2,725,193.94
  5. Step 5: Solve for x
    x = 2,725,193.94/2,043.16
  6. Step 6: Final answer
    x = 1,333.81

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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.