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Finding the Third Proportional to 76,321 and 165,778

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Solution

The third proportional to 76,321 and 165,778 is: 360,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,321 : 165,778 = 165,778 : x
  2. Step 2: Convert to fraction form
    76,321/165,778 = 165,778/x
  3. Step 3: Cross multiply
    76,321x = 165,778 × 165,778
  4. Step 4: Simplify right side
    76,321x = 27,482,345,284
  5. Step 5: Solve for x
    x = 27,482,345,284/76,321
  6. Step 6: Final answer
    x = 360,088.90

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.