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Finding the Fourth Proportional to 74,499.77, 111,751.68 and 21,910.93

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Solution

The fourth proportional to 74,499.77, 111,751.68 and 21,910.93 is: 32,866.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,499.77 : 111,751.68 = 21,910.93 : x
  2. Step 2: Convert to fraction form
    74,499.77/111,751.68 = 21,910.93/x
  3. Step 3: Cross multiply
    74,499.77x = 111,751.68 × 21,910.93
  4. Step 4: Simplify right side
    74,499.77x = 2,448,583,237.86
  5. Step 5: Solve for x
    x = 2,448,583,237.86/74,499.77
  6. Step 6: Final answer
    x = 32,866.99

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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.