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Finding the Fourth Proportional to 1,852.68, 2,779 and 1,082.64

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Solution

The fourth proportional to 1,852.68, 2,779 and 1,082.64 is: 1,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.68 : 2,779 = 1,082.64 : x
  2. Step 2: Convert to fraction form
    1,852.68/2,779 = 1,082.64/x
  3. Step 3: Cross multiply
    1,852.68x = 2,779 × 1,082.64
  4. Step 4: Simplify right side
    1,852.68x = 3,008,656.56
  5. Step 5: Solve for x
    x = 3,008,656.56/1,852.68
  6. Step 6: Final answer
    x = 1,623.95

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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.