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Finding the Fourth Proportional to 1,068.89, 1,474.43 and 675.23

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Solution

The fourth proportional to 1,068.89, 1,474.43 and 675.23 is: 931.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.89 : 1,474.43 = 675.23 : x
  2. Step 2: Convert to fraction form
    1,068.89/1,474.43 = 675.23/x
  3. Step 3: Cross multiply
    1,068.89x = 1,474.43 × 675.23
  4. Step 4: Simplify right side
    1,068.89x = 995,568.62
  5. Step 5: Solve for x
    x = 995,568.62/1,068.89
  6. Step 6: Final answer
    x = 931.41

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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.