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Finding the Fourth Proportional to 2,083.95, 3,126.15 and 697.23

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Solution

The fourth proportional to 2,083.95, 3,126.15 and 697.23 is: 1,045.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.95 : 3,126.15 = 697.23 : x
  2. Step 2: Convert to fraction form
    2,083.95/3,126.15 = 697.23/x
  3. Step 3: Cross multiply
    2,083.95x = 3,126.15 × 697.23
  4. Step 4: Simplify right side
    2,083.95x = 2,179,645.56
  5. Step 5: Solve for x
    x = 2,179,645.56/2,083.95
  6. Step 6: Final answer
    x = 1,045.92

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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.