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Finding the Third Proportional to 54,643.50 and 83,100

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Solution

The third proportional to 54,643.50 and 83,100 is: 126,375.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,643.50 : 83,100 = 83,100 : x
  2. Step 2: Convert to fraction form
    54,643.50/83,100 = 83,100/x
  3. Step 3: Cross multiply
    54,643.50x = 83,100 × 83,100
  4. Step 4: Simplify right side
    54,643.50x = 6,905,610,000
  5. Step 5: Solve for x
    x = 6,905,610,000/54,643.50
  6. Step 6: Final answer
    x = 126,375.69

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.