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Finding the Fourth Proportional to 1,022.94, 1,532.82 and 675.90

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Solution

The fourth proportional to 1,022.94, 1,532.82 and 675.90 is: 1,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.94 : 1,532.82 = 675.90 : x
  2. Step 2: Convert to fraction form
    1,022.94/1,532.82 = 675.90/x
  3. Step 3: Cross multiply
    1,022.94x = 1,532.82 × 675.90
  4. Step 4: Simplify right side
    1,022.94x = 1,036,033.04
  5. Step 5: Solve for x
    x = 1,036,033.04/1,022.94
  6. Step 6: Final answer
    x = 1,012.80

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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.