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Finding the Third Proportional to 1,838.50 and 4,270

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Solution

The third proportional to 1,838.50 and 4,270 is: 9,917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.50 : 4,270 = 4,270 : x
  2. Step 2: Convert to fraction form
    1,838.50/4,270 = 4,270/x
  3. Step 3: Cross multiply
    1,838.50x = 4,270 × 4,270
  4. Step 4: Simplify right side
    1,838.50x = 18,232,900
  5. Step 5: Solve for x
    x = 18,232,900/1,838.50
  6. Step 6: Final answer
    x = 9,917.27

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.