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Finding the Third Proportional to 885 and 1,180.50

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Solution

The third proportional to 885 and 1,180.50 is: 1,574.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    885 : 1,180.50 = 1,180.50 : x
  2. Step 2: Convert to fraction form
    885/1,180.50 = 1,180.50/x
  3. Step 3: Cross multiply
    885x = 1,180.50 × 1,180.50
  4. Step 4: Simplify right side
    885x = 1,393,580.25
  5. Step 5: Solve for x
    x = 1,393,580.25/885
  6. Step 6: Final answer
    x = 1,574.67

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.