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Finding the Third Proportional to 165,670.50 and 255,021

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Solution

The third proportional to 165,670.50 and 255,021 is: 392,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,670.50 : 255,021 = 255,021 : x
  2. Step 2: Convert to fraction form
    165,670.50/255,021 = 255,021/x
  3. Step 3: Cross multiply
    165,670.50x = 255,021 × 255,021
  4. Step 4: Simplify right side
    165,670.50x = 65,035,710,441
  5. Step 5: Solve for x
    x = 65,035,710,441/165,670.50
  6. Step 6: Final answer
    x = 392,560.60

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.