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Finding the Fourth Proportional to 63,198.36, 87,220.71 and 38,994.48

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Solution

The fourth proportional to 63,198.36, 87,220.71 and 38,994.48 is: 53,816.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,198.36 : 87,220.71 = 38,994.48 : x
  2. Step 2: Convert to fraction form
    63,198.36/87,220.71 = 38,994.48/x
  3. Step 3: Cross multiply
    63,198.36x = 87,220.71 × 38,994.48
  4. Step 4: Simplify right side
    63,198.36x = 3,401,126,231.68
  5. Step 5: Solve for x
    x = 3,401,126,231.68/63,198.36
  6. Step 6: Final answer
    x = 53,816.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.