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Finding the Fourth Proportional to 200,866.98, 301,318.20 and 74,508.66

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Solution

The fourth proportional to 200,866.98, 301,318.20 and 74,508.66 is: 111,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,866.98 : 301,318.20 = 74,508.66 : x
  2. Step 2: Convert to fraction form
    200,866.98/301,318.20 = 74,508.66/x
  3. Step 3: Cross multiply
    200,866.98x = 301,318.20 × 74,508.66
  4. Step 4: Simplify right side
    200,866.98x = 22,450,815,315.61
  5. Step 5: Solve for x
    x = 22,450,815,315.61/200,866.98
  6. Step 6: Final answer
    x = 111,769.57

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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.