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Finding the Fourth Proportional to 1,481.34, 2,044.59 and 984

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Solution

The fourth proportional to 1,481.34, 2,044.59 and 984 is: 1,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.34 : 2,044.59 = 984 : x
  2. Step 2: Convert to fraction form
    1,481.34/2,044.59 = 984/x
  3. Step 3: Cross multiply
    1,481.34x = 2,044.59 × 984
  4. Step 4: Simplify right side
    1,481.34x = 2,011,876.56
  5. Step 5: Solve for x
    x = 2,011,876.56/1,481.34
  6. Step 6: Final answer
    x = 1,358.15

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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.