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Finding the Fourth Proportional to 1,516.93, 2,273.98 and 694.38

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Solution

The fourth proportional to 1,516.93, 2,273.98 and 694.38 is: 1,040.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.93 : 2,273.98 = 694.38 : x
  2. Step 2: Convert to fraction form
    1,516.93/2,273.98 = 694.38/x
  3. Step 3: Cross multiply
    1,516.93x = 2,273.98 × 694.38
  4. Step 4: Simplify right side
    1,516.93x = 1,578,993.13
  5. Step 5: Solve for x
    x = 1,578,993.13/1,516.93
  6. Step 6: Final answer
    x = 1,040.91

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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.