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Finding the Fourth Proportional to 53,474.74, 80,211.99 and 21,899.51

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Solution

The fourth proportional to 53,474.74, 80,211.99 and 21,899.51 is: 32,849.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,474.74 : 80,211.99 = 21,899.51 : x
  2. Step 2: Convert to fraction form
    53,474.74/80,211.99 = 21,899.51/x
  3. Step 3: Cross multiply
    53,474.74x = 80,211.99 × 21,899.51
  4. Step 4: Simplify right side
    53,474.74x = 1,756,603,277.12
  5. Step 5: Solve for x
    x = 1,756,603,277.12/53,474.74
  6. Step 6: Final answer
    x = 32,849.22

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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.