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Finding the Fourth Proportional to 22,539.76, 33,644.50 and 19,879.64

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Solution

The fourth proportional to 22,539.76, 33,644.50 and 19,879.64 is: 29,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,539.76 : 33,644.50 = 19,879.64 : x
  2. Step 2: Convert to fraction form
    22,539.76/33,644.50 = 19,879.64/x
  3. Step 3: Cross multiply
    22,539.76x = 33,644.50 × 19,879.64
  4. Step 4: Simplify right side
    22,539.76x = 668,840,547.98
  5. Step 5: Solve for x
    x = 668,840,547.98/22,539.76
  6. Step 6: Final answer
    x = 29,673.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.