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Finding the Fourth Proportional to 2,059.68, 3,090.21 and 673.08

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Solution

The fourth proportional to 2,059.68, 3,090.21 and 673.08 is: 1,009.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,059.68 : 3,090.21 = 673.08 : x
  2. Step 2: Convert to fraction form
    2,059.68/3,090.21 = 673.08/x
  3. Step 3: Cross multiply
    2,059.68x = 3,090.21 × 673.08
  4. Step 4: Simplify right side
    2,059.68x = 2,079,958.55
  5. Step 5: Solve for x
    x = 2,079,958.55/2,059.68
  6. Step 6: Final answer
    x = 1,009.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.