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Finding the Third Proportional to 9,987.75 and 14,229

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Solution

The third proportional to 9,987.75 and 14,229 is: 20,271.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.75 : 14,229 = 14,229 : x
  2. Step 2: Convert to fraction form
    9,987.75/14,229 = 14,229/x
  3. Step 3: Cross multiply
    9,987.75x = 14,229 × 14,229
  4. Step 4: Simplify right side
    9,987.75x = 202,464,441
  5. Step 5: Solve for x
    x = 202,464,441/9,987.75
  6. Step 6: Final answer
    x = 20,271.28

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.