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Finding the Fourth Proportional to 74,315.49, 111,472.94 and 26,919.49

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Solution

The fourth proportional to 74,315.49, 111,472.94 and 26,919.49 is: 40,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,315.49 : 111,472.94 = 26,919.49 : x
  2. Step 2: Convert to fraction form
    74,315.49/111,472.94 = 26,919.49/x
  3. Step 3: Cross multiply
    74,315.49x = 111,472.94 × 26,919.49
  4. Step 4: Simplify right side
    74,315.49x = 3,000,794,904.98
  5. Step 5: Solve for x
    x = 3,000,794,904.98/74,315.49
  6. Step 6: Final answer
    x = 40,379.13

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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.