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Finding the Fourth Proportional to 81,004.52, 121,561.01 and 33,619.65

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Solution

The fourth proportional to 81,004.52, 121,561.01 and 33,619.65 is: 50,451.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,004.52 : 121,561.01 = 33,619.65 : x
  2. Step 2: Convert to fraction form
    81,004.52/121,561.01 = 33,619.65/x
  3. Step 3: Cross multiply
    81,004.52x = 121,561.01 × 33,619.65
  4. Step 4: Simplify right side
    81,004.52x = 4,086,838,441.75
  5. Step 5: Solve for x
    x = 4,086,838,441.75/81,004.52
  6. Step 6: Final answer
    x = 50,451.98

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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.