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Finding the Fourth Proportional to 73,751.76, 110,624.79 and 21,161.24

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Solution

The fourth proportional to 73,751.76, 110,624.79 and 21,161.24 is: 31,741.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,751.76 : 110,624.79 = 21,161.24 : x
  2. Step 2: Convert to fraction form
    73,751.76/110,624.79 = 21,161.24/x
  3. Step 3: Cross multiply
    73,751.76x = 110,624.79 × 21,161.24
  4. Step 4: Simplify right side
    73,751.76x = 2,340,957,178.02
  5. Step 5: Solve for x
    x = 2,340,957,178.02/73,751.76
  6. Step 6: Final answer
    x = 31,741.03

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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.