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Finding the Third Proportional to 39,919.50 and 61,407

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Solution

The third proportional to 39,919.50 and 61,407 is: 94,460.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,919.50 : 61,407 = 61,407 : x
  2. Step 2: Convert to fraction form
    39,919.50/61,407 = 61,407/x
  3. Step 3: Cross multiply
    39,919.50x = 61,407 × 61,407
  4. Step 4: Simplify right side
    39,919.50x = 3,770,819,649
  5. Step 5: Solve for x
    x = 3,770,819,649/39,919.50
  6. Step 6: Final answer
    x = 94,460.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.