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Finding the Third Proportional to 7,188.75 and 13,486.50

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Solution

The third proportional to 7,188.75 and 13,486.50 is: 25,301.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.75 : 13,486.50 = 13,486.50 : x
  2. Step 2: Convert to fraction form
    7,188.75/13,486.50 = 13,486.50/x
  3. Step 3: Cross multiply
    7,188.75x = 13,486.50 × 13,486.50
  4. Step 4: Simplify right side
    7,188.75x = 181,885,682.25
  5. Step 5: Solve for x
    x = 181,885,682.25/7,188.75
  6. Step 6: Final answer
    x = 25,301.43

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.