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Finding the Fourth Proportional to 2,342.10, 3,513.48 and 698.43

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Solution

The fourth proportional to 2,342.10, 3,513.48 and 698.43 is: 1,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,342.10 : 3,513.48 = 698.43 : x
  2. Step 2: Convert to fraction form
    2,342.10/3,513.48 = 698.43/x
  3. Step 3: Cross multiply
    2,342.10x = 3,513.48 × 698.43
  4. Step 4: Simplify right side
    2,342.10x = 2,453,919.84
  5. Step 5: Solve for x
    x = 2,453,919.84/2,342.10
  6. Step 6: Final answer
    x = 1,047.74

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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.