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Finding the Third Proportional to 871.63 and 1,833

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Solution

The third proportional to 871.63 and 1,833 is: 3,854.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    871.63 : 1,833 = 1,833 : x
  2. Step 2: Convert to fraction form
    871.63/1,833 = 1,833/x
  3. Step 3: Cross multiply
    871.63x = 1,833 × 1,833
  4. Step 4: Simplify right side
    871.63x = 3,359,889
  5. Step 5: Solve for x
    x = 3,359,889/871.63
  6. Step 6: Final answer
    x = 3,854.74

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.