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Finding the Fourth Proportional to 2,053.56, 3,080.34 and 667

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Solution

The fourth proportional to 2,053.56, 3,080.34 and 667 is: 1,000.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,053.56 : 3,080.34 = 667 : x
  2. Step 2: Convert to fraction form
    2,053.56/3,080.34 = 667/x
  3. Step 3: Cross multiply
    2,053.56x = 3,080.34 × 667
  4. Step 4: Simplify right side
    2,053.56x = 2,054,586.78
  5. Step 5: Solve for x
    x = 2,054,586.78/2,053.56
  6. Step 6: Final answer
    x = 1,000.50

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Double scale
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1.5x scale

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.