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Finding the Third Proportional to 14,922 and 18,090

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Solution

The third proportional to 14,922 and 18,090 is: 21,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,922 : 18,090 = 18,090 : x
  2. Step 2: Convert to fraction form
    14,922/18,090 = 18,090/x
  3. Step 3: Cross multiply
    14,922x = 18,090 × 18,090
  4. Step 4: Simplify right side
    14,922x = 327,248,100
  5. Step 5: Solve for x
    x = 327,248,100/14,922
  6. Step 6: Final answer
    x = 21,930.58

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.