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Finding the Fourth Proportional to 74,529.55, 111,755.86 and 21,932.21

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Solution

The fourth proportional to 74,529.55, 111,755.86 and 21,932.21 is: 32,886.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,529.55 : 111,755.86 = 21,932.21 : x
  2. Step 2: Convert to fraction form
    74,529.55/111,755.86 = 21,932.21/x
  3. Step 3: Cross multiply
    74,529.55x = 111,755.86 × 21,932.21
  4. Step 4: Simplify right side
    74,529.55x = 2,451,052,880.59
  5. Step 5: Solve for x
    x = 2,451,052,880.59/74,529.55
  6. Step 6: Final answer
    x = 32,886.99

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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.