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Finding the Fourth Proportional to 1,203.44, 1,660.50 and 706.23

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Solution

The fourth proportional to 1,203.44, 1,660.50 and 706.23 is: 974.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.44 : 1,660.50 = 706.23 : x
  2. Step 2: Convert to fraction form
    1,203.44/1,660.50 = 706.23/x
  3. Step 3: Cross multiply
    1,203.44x = 1,660.50 × 706.23
  4. Step 4: Simplify right side
    1,203.44x = 1,172,694.92
  5. Step 5: Solve for x
    x = 1,172,694.92/1,203.44
  6. Step 6: Final answer
    x = 974.46

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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.