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Finding the Third Proportional to 11,563.50 and 14,778

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Solution

The third proportional to 11,563.50 and 14,778 is: 18,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,563.50 : 14,778 = 14,778 : x
  2. Step 2: Convert to fraction form
    11,563.50/14,778 = 14,778/x
  3. Step 3: Cross multiply
    11,563.50x = 14,778 × 14,778
  4. Step 4: Simplify right side
    11,563.50x = 218,389,284
  5. Step 5: Solve for x
    x = 218,389,284/11,563.50
  6. Step 6: Final answer
    x = 18,886.09

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.