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Finding the Third Proportional to 520.63 and 1,100

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Solution

The third proportional to 520.63 and 1,100 is: 2,324.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.63 : 1,100 = 1,100 : x
  2. Step 2: Convert to fraction form
    520.63/1,100 = 1,100/x
  3. Step 3: Cross multiply
    520.63x = 1,100 × 1,100
  4. Step 4: Simplify right side
    520.63x = 1,210,000
  5. Step 5: Solve for x
    x = 1,210,000/520.63
  6. Step 6: Final answer
    x = 2,324.13

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.