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Finding the Fourth Proportional to 53,573.90, 80,342.21 and 21,974.99

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Solution

The fourth proportional to 53,573.90, 80,342.21 and 21,974.99 is: 32,954.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,573.90 : 80,342.21 = 21,974.99 : x
  2. Step 2: Convert to fraction form
    53,573.90/80,342.21 = 21,974.99/x
  3. Step 3: Cross multiply
    53,573.90x = 80,342.21 × 21,974.99
  4. Step 4: Simplify right side
    53,573.90x = 1,765,518,914.55
  5. Step 5: Solve for x
    x = 1,765,518,914.55/53,573.90
  6. Step 6: Final answer
    x = 32,954.84

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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.