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Finding the Third Proportional to 103,690 and 162,686

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Solution

The third proportional to 103,690 and 162,686 is: 255,248.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690 : 162,686 = 162,686 : x
  2. Step 2: Convert to fraction form
    103,690/162,686 = 162,686/x
  3. Step 3: Cross multiply
    103,690x = 162,686 × 162,686
  4. Step 4: Simplify right side
    103,690x = 26,466,734,596
  5. Step 5: Solve for x
    x = 26,466,734,596/103,690
  6. Step 6: Final answer
    x = 255,248.67

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.