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Finding the Third Proportional to 19,707.75 and 31,203

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Solution

The third proportional to 19,707.75 and 31,203 is: 49,403.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,707.75 : 31,203 = 31,203 : x
  2. Step 2: Convert to fraction form
    19,707.75/31,203 = 31,203/x
  3. Step 3: Cross multiply
    19,707.75x = 31,203 × 31,203
  4. Step 4: Simplify right side
    19,707.75x = 973,627,209
  5. Step 5: Solve for x
    x = 973,627,209/19,707.75
  6. Step 6: Final answer
    x = 49,403.27

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.