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Finding the Third Proportional to 936 and 1,470

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Solution

The third proportional to 936 and 1,470 is: 2,308.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    936 : 1,470 = 1,470 : x
  2. Step 2: Convert to fraction form
    936/1,470 = 1,470/x
  3. Step 3: Cross multiply
    936x = 1,470 × 1,470
  4. Step 4: Simplify right side
    936x = 2,160,900
  5. Step 5: Solve for x
    x = 2,160,900/936
  6. Step 6: Final answer
    x = 2,308.65

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.