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Finding the Third Proportional to 1,480 and 2,119

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Solution

The third proportional to 1,480 and 2,119 is: 3,033.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480 : 2,119 = 2,119 : x
  2. Step 2: Convert to fraction form
    1,480/2,119 = 2,119/x
  3. Step 3: Cross multiply
    1,480x = 2,119 × 2,119
  4. Step 4: Simplify right side
    1,480x = 4,490,161
  5. Step 5: Solve for x
    x = 4,490,161/1,480
  6. Step 6: Final answer
    x = 3,033.89

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.