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Finding the Fourth Proportional to 3,133.76, 4,700.16 and 825.44

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Solution

The fourth proportional to 3,133.76, 4,700.16 and 825.44 is: 1,238.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.76 : 4,700.16 = 825.44 : x
  2. Step 2: Convert to fraction form
    3,133.76/4,700.16 = 825.44/x
  3. Step 3: Cross multiply
    3,133.76x = 4,700.16 × 825.44
  4. Step 4: Simplify right side
    3,133.76x = 3,879,700.07
  5. Step 5: Solve for x
    x = 3,879,700.07/3,133.76
  6. Step 6: Final answer
    x = 1,238.03

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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.