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Finding the Third Proportional to 13,675.50 and 21,276

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Solution

The third proportional to 13,675.50 and 21,276 is: 33,100.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.50 : 21,276 = 21,276 : x
  2. Step 2: Convert to fraction form
    13,675.50/21,276 = 21,276/x
  3. Step 3: Cross multiply
    13,675.50x = 21,276 × 21,276
  4. Step 4: Simplify right side
    13,675.50x = 452,668,176
  5. Step 5: Solve for x
    x = 452,668,176/13,675.50
  6. Step 6: Final answer
    x = 33,100.67

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.