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Finding the Fourth Proportional to 2,134.93, 3,202.15 and 673.28

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Solution

The fourth proportional to 2,134.93, 3,202.15 and 673.28 is: 1,009.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,134.93 : 3,202.15 = 673.28 : x
  2. Step 2: Convert to fraction form
    2,134.93/3,202.15 = 673.28/x
  3. Step 3: Cross multiply
    2,134.93x = 3,202.15 × 673.28
  4. Step 4: Simplify right side
    2,134.93x = 2,155,943.55
  5. Step 5: Solve for x
    x = 2,155,943.55/2,134.93
  6. Step 6: Final answer
    x = 1,009.84

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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.