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Finding the Third Proportional to 19,042.50 and 40,920

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Solution

The third proportional to 19,042.50 and 40,920 is: 87,932.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,042.50 : 40,920 = 40,920 : x
  2. Step 2: Convert to fraction form
    19,042.50/40,920 = 40,920/x
  3. Step 3: Cross multiply
    19,042.50x = 40,920 × 40,920
  4. Step 4: Simplify right side
    19,042.50x = 1,674,446,400
  5. Step 5: Solve for x
    x = 1,674,446,400/19,042.50
  6. Step 6: Final answer
    x = 87,932.07

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.