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Finding the Fourth Proportional to 86,115.52, 129,232.86 and 33,525.28

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Solution

The fourth proportional to 86,115.52, 129,232.86 and 33,525.28 is: 50,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,115.52 : 129,232.86 = 33,525.28 : x
  2. Step 2: Convert to fraction form
    86,115.52/129,232.86 = 33,525.28/x
  3. Step 3: Cross multiply
    86,115.52x = 129,232.86 × 33,525.28
  4. Step 4: Simplify right side
    86,115.52x = 4,332,567,816.70
  5. Step 5: Solve for x
    x = 4,332,567,816.70/86,115.52
  6. Step 6: Final answer
    x = 50,311.11

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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.