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Finding the Fourth Proportional to 2,692.81, 4,040.49 and 1,133.16

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Solution

The fourth proportional to 2,692.81, 4,040.49 and 1,133.16 is: 1,700.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.81 : 4,040.49 = 1,133.16 : x
  2. Step 2: Convert to fraction form
    2,692.81/4,040.49 = 1,133.16/x
  3. Step 3: Cross multiply
    2,692.81x = 4,040.49 × 1,133.16
  4. Step 4: Simplify right side
    2,692.81x = 4,578,521.65
  5. Step 5: Solve for x
    x = 4,578,521.65/2,692.81
  6. Step 6: Final answer
    x = 1,700.28

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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.