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Finding the Fourth Proportional to 3,181.82, 4,390.94 and 1,923.01

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Solution

The fourth proportional to 3,181.82, 4,390.94 and 1,923.01 is: 2,653.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.82 : 4,390.94 = 1,923.01 : x
  2. Step 2: Convert to fraction form
    3,181.82/4,390.94 = 1,923.01/x
  3. Step 3: Cross multiply
    3,181.82x = 4,390.94 × 1,923.01
  4. Step 4: Simplify right side
    3,181.82x = 8,443,815.36
  5. Step 5: Solve for x
    x = 8,443,815.36/3,181.82
  6. Step 6: Final answer
    x = 2,653.77

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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.