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Finding the Fourth Proportional to 4,891.50, 6,750.21 and 2,653.38

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Solution

The fourth proportional to 4,891.50, 6,750.21 and 2,653.38 is: 3,661.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.50 : 6,750.21 = 2,653.38 : x
  2. Step 2: Convert to fraction form
    4,891.50/6,750.21 = 2,653.38/x
  3. Step 3: Cross multiply
    4,891.50x = 6,750.21 × 2,653.38
  4. Step 4: Simplify right side
    4,891.50x = 17,910,872.21
  5. Step 5: Solve for x
    x = 17,910,872.21/4,891.50
  6. Step 6: Final answer
    x = 3,661.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.