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Finding the Fourth Proportional to 1,582.22, 2,183.49 and 993.08

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Solution

The fourth proportional to 1,582.22, 2,183.49 and 993.08 is: 1,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.22 : 2,183.49 = 993.08 : x
  2. Step 2: Convert to fraction form
    1,582.22/2,183.49 = 993.08/x
  3. Step 3: Cross multiply
    1,582.22x = 2,183.49 × 993.08
  4. Step 4: Simplify right side
    1,582.22x = 2,168,380.25
  5. Step 5: Solve for x
    x = 2,168,380.25/1,582.22
  6. Step 6: Final answer
    x = 1,370.47

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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.