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Finding the Third Proportional to 12,216 and 25,312

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Solution

The third proportional to 12,216 and 25,312 is: 52,447.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216 : 25,312 = 25,312 : x
  2. Step 2: Convert to fraction form
    12,216/25,312 = 25,312/x
  3. Step 3: Cross multiply
    12,216x = 25,312 × 25,312
  4. Step 4: Simplify right side
    12,216x = 640,697,344
  5. Step 5: Solve for x
    x = 640,697,344/12,216
  6. Step 6: Final answer
    x = 52,447.39

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.