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Finding the Third Proportional to 19,276 and 40,072

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Solution

The third proportional to 19,276 and 40,072 is: 83,303.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,276 : 40,072 = 40,072 : x
  2. Step 2: Convert to fraction form
    19,276/40,072 = 40,072/x
  3. Step 3: Cross multiply
    19,276x = 40,072 × 40,072
  4. Step 4: Simplify right side
    19,276x = 1,605,765,184
  5. Step 5: Solve for x
    x = 1,605,765,184/19,276
  6. Step 6: Final answer
    x = 83,303.86

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.