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Finding the Fourth Proportional to 86,408.57, 129,608.53 and 33,827.69

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Solution

The fourth proportional to 86,408.57, 129,608.53 and 33,827.69 is: 50,739.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,408.57 : 129,608.53 = 33,827.69 : x
  2. Step 2: Convert to fraction form
    86,408.57/129,608.53 = 33,827.69/x
  3. Step 3: Cross multiply
    86,408.57x = 129,608.53 × 33,827.69
  4. Step 4: Simplify right side
    86,408.57x = 4,384,357,174.20
  5. Step 5: Solve for x
    x = 4,384,357,174.20/86,408.57
  6. Step 6: Final answer
    x = 50,739.84

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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.