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Finding the Fourth Proportional to 200,488.57, 300,544.49 and 67,275.39

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Solution

The fourth proportional to 200,488.57, 300,544.49 and 67,275.39 is: 100,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,488.57 : 300,544.49 = 67,275.39 : x
  2. Step 2: Convert to fraction form
    200,488.57/300,544.49 = 67,275.39/x
  3. Step 3: Cross multiply
    200,488.57x = 300,544.49 × 67,275.39
  4. Step 4: Simplify right side
    200,488.57x = 20,219,249,072.33
  5. Step 5: Solve for x
    x = 20,219,249,072.33/200,488.57
  6. Step 6: Final answer
    x = 100,849.89

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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.