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Finding the Third Proportional to 12,562 and 19,888

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Solution

The third proportional to 12,562 and 19,888 is: 31,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,562 : 19,888 = 19,888 : x
  2. Step 2: Convert to fraction form
    12,562/19,888 = 19,888/x
  3. Step 3: Cross multiply
    12,562x = 19,888 × 19,888
  4. Step 4: Simplify right side
    12,562x = 395,532,544
  5. Step 5: Solve for x
    x = 395,532,544/12,562
  6. Step 6: Final answer
    x = 31,486.43

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.