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Finding the Fourth Proportional to 54,596.65, 81,846.25 and 21,308.98

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Solution

The fourth proportional to 54,596.65, 81,846.25 and 21,308.98 is: 31,944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,596.65 : 81,846.25 = 21,308.98 : x
  2. Step 2: Convert to fraction form
    54,596.65/81,846.25 = 21,308.98/x
  3. Step 3: Cross multiply
    54,596.65x = 81,846.25 × 21,308.98
  4. Step 4: Simplify right side
    54,596.65x = 1,744,060,104.33
  5. Step 5: Solve for x
    x = 1,744,060,104.33/54,596.65
  6. Step 6: Final answer
    x = 31,944.45

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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.