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Finding the Fourth Proportional to 69,219.99, 103,854.06 and 21,842.37

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Solution

The fourth proportional to 69,219.99, 103,854.06 and 21,842.37 is: 32,771.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,219.99 : 103,854.06 = 21,842.37 : x
  2. Step 2: Convert to fraction form
    69,219.99/103,854.06 = 21,842.37/x
  3. Step 3: Cross multiply
    69,219.99x = 103,854.06 × 21,842.37
  4. Step 4: Simplify right side
    69,219.99x = 2,268,418,804.52
  5. Step 5: Solve for x
    x = 2,268,418,804.52/69,219.99
  6. Step 6: Final answer
    x = 32,771.15

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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.