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Finding the Third Proportional to 1,876.61 and 3,984.23

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Solution

The third proportional to 1,876.61 and 3,984.23 is: 8,458.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.61 : 3,984.23 = 3,984.23 : x
  2. Step 2: Convert to fraction form
    1,876.61/3,984.23 = 3,984.23/x
  3. Step 3: Cross multiply
    1,876.61x = 3,984.23 × 3,984.23
  4. Step 4: Simplify right side
    1,876.61x = 15,874,065.19
  5. Step 5: Solve for x
    x = 15,874,065.19/1,876.61
  6. Step 6: Final answer
    x = 8,458.93

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.