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Finding the Third Proportional to 920.50 and 2,011

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Solution

The third proportional to 920.50 and 2,011 is: 4,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.50 : 2,011 = 2,011 : x
  2. Step 2: Convert to fraction form
    920.50/2,011 = 2,011/x
  3. Step 3: Cross multiply
    920.50x = 2,011 × 2,011
  4. Step 4: Simplify right side
    920.50x = 4,044,121
  5. Step 5: Solve for x
    x = 4,044,121/920.50
  6. Step 6: Final answer
    x = 4,393.40

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.