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Finding the Fourth Proportional to 86,383.86, 129,575.79 and 33,756.42

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Solution

The fourth proportional to 86,383.86, 129,575.79 and 33,756.42 is: 50,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,383.86 : 129,575.79 = 33,756.42 : x
  2. Step 2: Convert to fraction form
    86,383.86/129,575.79 = 33,756.42/x
  3. Step 3: Cross multiply
    86,383.86x = 129,575.79 × 33,756.42
  4. Step 4: Simplify right side
    86,383.86x = 4,374,014,789.07
  5. Step 5: Solve for x
    x = 4,374,014,789.07/86,383.86
  6. Step 6: Final answer
    x = 50,634.63

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1.5x scale

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.