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Finding the Third Proportional to 10,906 and 14,785

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Solution

The third proportional to 10,906 and 14,785 is: 20,043.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,906 : 14,785 = 14,785 : x
  2. Step 2: Convert to fraction form
    10,906/14,785 = 14,785/x
  3. Step 3: Cross multiply
    10,906x = 14,785 × 14,785
  4. Step 4: Simplify right side
    10,906x = 218,596,225
  5. Step 5: Solve for x
    x = 218,596,225/10,906
  6. Step 6: Final answer
    x = 20,043.67

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.