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Finding the Third Proportional to 9,579.75 and 12,423

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Solution

The third proportional to 9,579.75 and 12,423 is: 16,110.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.75 : 12,423 = 12,423 : x
  2. Step 2: Convert to fraction form
    9,579.75/12,423 = 12,423/x
  3. Step 3: Cross multiply
    9,579.75x = 12,423 × 12,423
  4. Step 4: Simplify right side
    9,579.75x = 154,330,929
  5. Step 5: Solve for x
    x = 154,330,929/9,579.75
  6. Step 6: Final answer
    x = 16,110.12

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.