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Finding the Third Proportional to 18,943.88 and 28,679.06

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Solution

The third proportional to 18,943.88 and 28,679.06 is: 43,417.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.88 : 28,679.06 = 28,679.06 : x
  2. Step 2: Convert to fraction form
    18,943.88/28,679.06 = 28,679.06/x
  3. Step 3: Cross multiply
    18,943.88x = 28,679.06 × 28,679.06
  4. Step 4: Simplify right side
    18,943.88x = 822,488,625.88
  5. Step 5: Solve for x
    x = 822,488,625.88/18,943.88
  6. Step 6: Final answer
    x = 43,417.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.