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Finding the Fourth Proportional to 53,912.40, 80,839.80 and 22,712.40

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Solution

The fourth proportional to 53,912.40, 80,839.80 and 22,712.40 is: 34,056.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,912.40 : 80,839.80 = 22,712.40 : x
  2. Step 2: Convert to fraction form
    53,912.40/80,839.80 = 22,712.40/x
  3. Step 3: Cross multiply
    53,912.40x = 80,839.80 × 22,712.40
  4. Step 4: Simplify right side
    53,912.40x = 1,836,065,873.52
  5. Step 5: Solve for x
    x = 1,836,065,873.52/53,912.40
  6. Step 6: Final answer
    x = 34,056.47

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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.