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Finding the Fourth Proportional to 1,314.82, 1,814.43 and 1,000.34

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Solution

The fourth proportional to 1,314.82, 1,814.43 and 1,000.34 is: 1,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.82 : 1,814.43 = 1,000.34 : x
  2. Step 2: Convert to fraction form
    1,314.82/1,814.43 = 1,000.34/x
  3. Step 3: Cross multiply
    1,314.82x = 1,814.43 × 1,000.34
  4. Step 4: Simplify right side
    1,314.82x = 1,815,046.91
  5. Step 5: Solve for x
    x = 1,815,046.91/1,314.82
  6. Step 6: Final answer
    x = 1,380.45

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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.