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Finding the Fourth Proportional to 53,866.71, 80,836.97 and 18,806.36

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Solution

The fourth proportional to 53,866.71, 80,836.97 and 18,806.36 is: 28,222.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,866.71 : 80,836.97 = 18,806.36 : x
  2. Step 2: Convert to fraction form
    53,866.71/80,836.97 = 18,806.36/x
  3. Step 3: Cross multiply
    53,866.71x = 80,836.97 × 18,806.36
  4. Step 4: Simplify right side
    53,866.71x = 1,520,248,660.91
  5. Step 5: Solve for x
    x = 1,520,248,660.91/53,866.71
  6. Step 6: Final answer
    x = 28,222.42

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1.5x scale

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.