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Finding the Third Proportional to 68,807.50 and 105,263

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Solution

The third proportional to 68,807.50 and 105,263 is: 161,033.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,807.50 : 105,263 = 105,263 : x
  2. Step 2: Convert to fraction form
    68,807.50/105,263 = 105,263/x
  3. Step 3: Cross multiply
    68,807.50x = 105,263 × 105,263
  4. Step 4: Simplify right side
    68,807.50x = 11,080,299,169
  5. Step 5: Solve for x
    x = 11,080,299,169/68,807.50
  6. Step 6: Final answer
    x = 161,033.31

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.