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Finding the Third Proportional to 1,162.13 and 2,178

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Solution

The third proportional to 1,162.13 and 2,178 is: 4,081.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.13 : 2,178 = 2,178 : x
  2. Step 2: Convert to fraction form
    1,162.13/2,178 = 2,178/x
  3. Step 3: Cross multiply
    1,162.13x = 2,178 × 2,178
  4. Step 4: Simplify right side
    1,162.13x = 4,743,684
  5. Step 5: Solve for x
    x = 4,743,684/1,162.13
  6. Step 6: Final answer
    x = 4,081.91

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.