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Finding the Third Proportional to 745 and 1,164

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Solution

The third proportional to 745 and 1,164 is: 1,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    745 : 1,164 = 1,164 : x
  2. Step 2: Convert to fraction form
    745/1,164 = 1,164/x
  3. Step 3: Cross multiply
    745x = 1,164 × 1,164
  4. Step 4: Simplify right side
    745x = 1,354,896
  5. Step 5: Solve for x
    x = 1,354,896/745
  6. Step 6: Final answer
    x = 1,818.65

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.