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Finding the Fourth Proportional to 1,198.75, 1,655.09 and 848.83

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Solution

The fourth proportional to 1,198.75, 1,655.09 and 848.83 is: 1,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.75 : 1,655.09 = 848.83 : x
  2. Step 2: Convert to fraction form
    1,198.75/1,655.09 = 848.83/x
  3. Step 3: Cross multiply
    1,198.75x = 1,655.09 × 848.83
  4. Step 4: Simplify right side
    1,198.75x = 1,404,890.04
  5. Step 5: Solve for x
    x = 1,404,890.04/1,198.75
  6. Step 6: Final answer
    x = 1,171.96

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1.5x scale

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.