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Finding the Fourth Proportional to 73,721.80, 110,571.76 and 36,271.80

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Solution

The fourth proportional to 73,721.80, 110,571.76 and 36,271.80 is: 54,402.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,721.80 : 110,571.76 = 36,271.80 : x
  2. Step 2: Convert to fraction form
    73,721.80/110,571.76 = 36,271.80/x
  3. Step 3: Cross multiply
    73,721.80x = 110,571.76 × 36,271.80
  4. Step 4: Simplify right side
    73,721.80x = 4,010,636,764.37
  5. Step 5: Solve for x
    x = 4,010,636,764.37/73,721.80
  6. Step 6: Final answer
    x = 54,402.32

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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.