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Finding the Third Proportional to 1,178 and 1,803

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Solution

The third proportional to 1,178 and 1,803 is: 2,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178 : 1,803 = 1,803 : x
  2. Step 2: Convert to fraction form
    1,178/1,803 = 1,803/x
  3. Step 3: Cross multiply
    1,178x = 1,803 × 1,803
  4. Step 4: Simplify right side
    1,178x = 3,250,809
  5. Step 5: Solve for x
    x = 3,250,809/1,178
  6. Step 6: Final answer
    x = 2,759.60

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.