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Finding the Third Proportional to 623 and 1,178

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Solution

The third proportional to 623 and 1,178 is: 2,227.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    623 : 1,178 = 1,178 : x
  2. Step 2: Convert to fraction form
    623/1,178 = 1,178/x
  3. Step 3: Cross multiply
    623x = 1,178 × 1,178
  4. Step 4: Simplify right side
    623x = 1,387,684
  5. Step 5: Solve for x
    x = 1,387,684/623
  6. Step 6: Final answer
    x = 2,227.42

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.