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Finding the Third Proportional to 551.50 and 1,124

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Solution

The third proportional to 551.50 and 1,124 is: 2,290.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.50 : 1,124 = 1,124 : x
  2. Step 2: Convert to fraction form
    551.50/1,124 = 1,124/x
  3. Step 3: Cross multiply
    551.50x = 1,124 × 1,124
  4. Step 4: Simplify right side
    551.50x = 1,263,376
  5. Step 5: Solve for x
    x = 1,263,376/551.50
  6. Step 6: Final answer
    x = 2,290.80

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.