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Finding the Fourth Proportional to 72,813.32, 109,232.44 and 33,373.81

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Solution

The fourth proportional to 72,813.32, 109,232.44 and 33,373.81 is: 50,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,813.32 : 109,232.44 = 33,373.81 : x
  2. Step 2: Convert to fraction form
    72,813.32/109,232.44 = 33,373.81/x
  3. Step 3: Cross multiply
    72,813.32x = 109,232.44 × 33,373.81
  4. Step 4: Simplify right side
    72,813.32x = 3,645,503,011.79
  5. Step 5: Solve for x
    x = 3,645,503,011.79/72,813.32
  6. Step 6: Final answer
    x = 50,066.43

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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.