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Finding the Third Proportional to 9,907.75 and 15,930.38

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Solution

The third proportional to 9,907.75 and 15,930.38 is: 25,613.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907.75 : 15,930.38 = 15,930.38 : x
  2. Step 2: Convert to fraction form
    9,907.75/15,930.38 = 15,930.38/x
  3. Step 3: Cross multiply
    9,907.75x = 15,930.38 × 15,930.38
  4. Step 4: Simplify right side
    9,907.75x = 253,776,847.64
  5. Step 5: Solve for x
    x = 253,776,847.64/9,907.75
  6. Step 6: Final answer
    x = 25,613.97

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.