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Finding the Third Proportional to 18,396 and 28,165.50

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Solution

The third proportional to 18,396 and 28,165.50 is: 43,123.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396 : 28,165.50 = 28,165.50 : x
  2. Step 2: Convert to fraction form
    18,396/28,165.50 = 28,165.50/x
  3. Step 3: Cross multiply
    18,396x = 28,165.50 × 28,165.50
  4. Step 4: Simplify right side
    18,396x = 793,295,390.25
  5. Step 5: Solve for x
    x = 793,295,390.25/18,396
  6. Step 6: Final answer
    x = 43,123.25

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.