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Finding the Fourth Proportional to 72,955.89, 109,380.56 and 49,204.40

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Solution

The fourth proportional to 72,955.89, 109,380.56 and 49,204.40 is: 73,770.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,955.89 : 109,380.56 = 49,204.40 : x
  2. Step 2: Convert to fraction form
    72,955.89/109,380.56 = 49,204.40/x
  3. Step 3: Cross multiply
    72,955.89x = 109,380.56 × 49,204.40
  4. Step 4: Simplify right side
    72,955.89x = 5,382,004,033.54
  5. Step 5: Solve for x
    x = 5,382,004,033.54/72,955.89
  6. Step 6: Final answer
    x = 73,770.66

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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.