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Finding the Fourth Proportional to 1,198.24, 1,653.61 and 700.86

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Solution

The fourth proportional to 1,198.24, 1,653.61 and 700.86 is: 967.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.24 : 1,653.61 = 700.86 : x
  2. Step 2: Convert to fraction form
    1,198.24/1,653.61 = 700.86/x
  3. Step 3: Cross multiply
    1,198.24x = 1,653.61 × 700.86
  4. Step 4: Simplify right side
    1,198.24x = 1,158,947.35
  5. Step 5: Solve for x
    x = 1,158,947.35/1,198.24
  6. Step 6: Final answer
    x = 967.21

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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.