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Finding the Third Proportional to 15,386.63 and 20,202.75

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Solution

The third proportional to 15,386.63 and 20,202.75 is: 26,526.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.63 : 20,202.75 = 20,202.75 : x
  2. Step 2: Convert to fraction form
    15,386.63/20,202.75 = 20,202.75/x
  3. Step 3: Cross multiply
    15,386.63x = 20,202.75 × 20,202.75
  4. Step 4: Simplify right side
    15,386.63x = 408,151,107.56
  5. Step 5: Solve for x
    x = 408,151,107.56/15,386.63
  6. Step 6: Final answer
    x = 26,526.36

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.