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Finding the Third Proportional to 165,482 and 255,712

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Solution

The third proportional to 165,482 and 255,712 is: 395,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,482 : 255,712 = 255,712 : x
  2. Step 2: Convert to fraction form
    165,482/255,712 = 255,712/x
  3. Step 3: Cross multiply
    165,482x = 255,712 × 255,712
  4. Step 4: Simplify right side
    165,482x = 65,388,626,944
  5. Step 5: Solve for x
    x = 65,388,626,944/165,482
  6. Step 6: Final answer
    x = 395,140.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.