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Finding the Third Proportional to 21,615 and 46,918.50

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Solution

The third proportional to 21,615 and 46,918.50 is: 101,843.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615 : 46,918.50 = 46,918.50 : x
  2. Step 2: Convert to fraction form
    21,615/46,918.50 = 46,918.50/x
  3. Step 3: Cross multiply
    21,615x = 46,918.50 × 46,918.50
  4. Step 4: Simplify right side
    21,615x = 2,201,345,642.25
  5. Step 5: Solve for x
    x = 2,201,345,642.25/21,615
  6. Step 6: Final answer
    x = 101,843.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.