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Finding the Fourth Proportional to 1,927.85, 2,891.82 and 695.36

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Solution

The fourth proportional to 1,927.85, 2,891.82 and 695.36 is: 1,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.85 : 2,891.82 = 695.36 : x
  2. Step 2: Convert to fraction form
    1,927.85/2,891.82 = 695.36/x
  3. Step 3: Cross multiply
    1,927.85x = 2,891.82 × 695.36
  4. Step 4: Simplify right side
    1,927.85x = 2,010,855.96
  5. Step 5: Solve for x
    x = 2,010,855.96/1,927.85
  6. Step 6: Final answer
    x = 1,043.06

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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.