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Finding the Third Proportional to 1,254 and 1,930

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Solution

The third proportional to 1,254 and 1,930 is: 2,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254 : 1,930 = 1,930 : x
  2. Step 2: Convert to fraction form
    1,254/1,930 = 1,930/x
  3. Step 3: Cross multiply
    1,254x = 1,930 × 1,930
  4. Step 4: Simplify right side
    1,254x = 3,724,900
  5. Step 5: Solve for x
    x = 3,724,900/1,254
  6. Step 6: Final answer
    x = 2,970.41

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.