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Finding the Fourth Proportional to 2,098.56, 3,147.84 and 943.50

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Solution

The fourth proportional to 2,098.56, 3,147.84 and 943.50 is: 1,415.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.56 : 3,147.84 = 943.50 : x
  2. Step 2: Convert to fraction form
    2,098.56/3,147.84 = 943.50/x
  3. Step 3: Cross multiply
    2,098.56x = 3,147.84 × 943.50
  4. Step 4: Simplify right side
    2,098.56x = 2,969,987.04
  5. Step 5: Solve for x
    x = 2,969,987.04/2,098.56
  6. Step 6: Final answer
    x = 1,415.25

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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.