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Finding the Third Proportional to 1,869.75 and 4,077

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Solution

The third proportional to 1,869.75 and 4,077 is: 8,889.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.75 : 4,077 = 4,077 : x
  2. Step 2: Convert to fraction form
    1,869.75/4,077 = 4,077/x
  3. Step 3: Cross multiply
    1,869.75x = 4,077 × 4,077
  4. Step 4: Simplify right side
    1,869.75x = 16,621,929
  5. Step 5: Solve for x
    x = 16,621,929/1,869.75
  6. Step 6: Final answer
    x = 8,889.92

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.