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Finding the Fourth Proportional to 92,578.80, 138,834.72 and 33,398.56

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Solution

The fourth proportional to 92,578.80, 138,834.72 and 33,398.56 is: 50,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,578.80 : 138,834.72 = 33,398.56 : x
  2. Step 2: Convert to fraction form
    92,578.80/138,834.72 = 33,398.56/x
  3. Step 3: Cross multiply
    92,578.80x = 138,834.72 × 33,398.56
  4. Step 4: Simplify right side
    92,578.80x = 4,636,879,726.00
  5. Step 5: Solve for x
    x = 4,636,879,726.00/92,578.80
  6. Step 6: Final answer
    x = 50,085.76

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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.