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Finding the Fourth Proportional to 73,206.78, 109,868.49 and 28,844.70

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Solution

The fourth proportional to 73,206.78, 109,868.49 and 28,844.70 is: 43,290.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,206.78 : 109,868.49 = 28,844.70 : x
  2. Step 2: Convert to fraction form
    73,206.78/109,868.49 = 28,844.70/x
  3. Step 3: Cross multiply
    73,206.78x = 109,868.49 × 28,844.70
  4. Step 4: Simplify right side
    73,206.78x = 3,169,123,633.50
  5. Step 5: Solve for x
    x = 3,169,123,633.50/73,206.78
  6. Step 6: Final answer
    x = 43,290.03

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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.