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Finding the Third Proportional to 865.50 and 2,043

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Solution

The third proportional to 865.50 and 2,043 is: 4,822.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.50 : 2,043 = 2,043 : x
  2. Step 2: Convert to fraction form
    865.50/2,043 = 2,043/x
  3. Step 3: Cross multiply
    865.50x = 2,043 × 2,043
  4. Step 4: Simplify right side
    865.50x = 4,173,849
  5. Step 5: Solve for x
    x = 4,173,849/865.50
  6. Step 6: Final answer
    x = 4,822.47

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.