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Finding the Third Proportional to 170,216.75 and 256,059.50

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Solution

The third proportional to 170,216.75 and 256,059.50 is: 385,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,216.75 : 256,059.50 = 256,059.50 : x
  2. Step 2: Convert to fraction form
    170,216.75/256,059.50 = 256,059.50/x
  3. Step 3: Cross multiply
    170,216.75x = 256,059.50 × 256,059.50
  4. Step 4: Simplify right side
    170,216.75x = 65,566,467,540.25
  5. Step 5: Solve for x
    x = 65,566,467,540.25/170,216.75
  6. Step 6: Final answer
    x = 385,193.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.