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Finding the Third Proportional to 15,820 and 33,382

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Solution

The third proportional to 15,820 and 33,382 is: 70,439.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820 : 33,382 = 33,382 : x
  2. Step 2: Convert to fraction form
    15,820/33,382 = 33,382/x
  3. Step 3: Cross multiply
    15,820x = 33,382 × 33,382
  4. Step 4: Simplify right side
    15,820x = 1,114,357,924
  5. Step 5: Solve for x
    x = 1,114,357,924/15,820
  6. Step 6: Final answer
    x = 70,439.82

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.