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Finding the Third Proportional to 8,938.50 and 13,255

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Solution

The third proportional to 8,938.50 and 13,255 is: 19,655.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.50 : 13,255 = 13,255 : x
  2. Step 2: Convert to fraction form
    8,938.50/13,255 = 13,255/x
  3. Step 3: Cross multiply
    8,938.50x = 13,255 × 13,255
  4. Step 4: Simplify right side
    8,938.50x = 175,695,025
  5. Step 5: Solve for x
    x = 175,695,025/8,938.50
  6. Step 6: Final answer
    x = 19,655.99

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.