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Finding the Third Proportional to 20,393 and 28,718.50

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Solution

The third proportional to 20,393 and 28,718.50 is: 40,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393 : 28,718.50 = 28,718.50 : x
  2. Step 2: Convert to fraction form
    20,393/28,718.50 = 28,718.50/x
  3. Step 3: Cross multiply
    20,393x = 28,718.50 × 28,718.50
  4. Step 4: Simplify right side
    20,393x = 824,752,242.25
  5. Step 5: Solve for x
    x = 824,752,242.25/20,393
  6. Step 6: Final answer
    x = 40,442.91

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.