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Finding the Third Proportional to 850.50 and 1,386

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Solution

The third proportional to 850.50 and 1,386 is: 2,258.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.50 : 1,386 = 1,386 : x
  2. Step 2: Convert to fraction form
    850.50/1,386 = 1,386/x
  3. Step 3: Cross multiply
    850.50x = 1,386 × 1,386
  4. Step 4: Simplify right side
    850.50x = 1,920,996
  5. Step 5: Solve for x
    x = 1,920,996/850.50
  6. Step 6: Final answer
    x = 2,258.67

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.