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Finding the Third Proportional to 54,959.50 and 82,403

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Solution

The third proportional to 54,959.50 and 82,403 is: 123,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,959.50 : 82,403 = 82,403 : x
  2. Step 2: Convert to fraction form
    54,959.50/82,403 = 82,403/x
  3. Step 3: Cross multiply
    54,959.50x = 82,403 × 82,403
  4. Step 4: Simplify right side
    54,959.50x = 6,790,254,409
  5. Step 5: Solve for x
    x = 6,790,254,409/54,959.50
  6. Step 6: Final answer
    x = 123,550.15

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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.