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Finding the Third Proportional to 70,549.75 and 109,285

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Solution

The third proportional to 70,549.75 and 109,285 is: 169,287.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,549.75 : 109,285 = 109,285 : x
  2. Step 2: Convert to fraction form
    70,549.75/109,285 = 109,285/x
  3. Step 3: Cross multiply
    70,549.75x = 109,285 × 109,285
  4. Step 4: Simplify right side
    70,549.75x = 11,943,211,225
  5. Step 5: Solve for x
    x = 11,943,211,225/70,549.75
  6. Step 6: Final answer
    x = 169,287.79

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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.