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Finding the Third Proportional to 1,886 and 3,090

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Solution

The third proportional to 1,886 and 3,090 is: 5,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886 : 3,090 = 3,090 : x
  2. Step 2: Convert to fraction form
    1,886/3,090 = 3,090/x
  3. Step 3: Cross multiply
    1,886x = 3,090 × 3,090
  4. Step 4: Simplify right side
    1,886x = 9,548,100
  5. Step 5: Solve for x
    x = 9,548,100/1,886
  6. Step 6: Final answer
    x = 5,062.62

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.