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Finding the Fourth Proportional to 53,866.56, 80,805.16 and 20,614.56

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Solution

The fourth proportional to 53,866.56, 80,805.16 and 20,614.56 is: 30,923.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,866.56 : 80,805.16 = 20,614.56 : x
  2. Step 2: Convert to fraction form
    53,866.56/80,805.16 = 20,614.56/x
  3. Step 3: Cross multiply
    53,866.56x = 80,805.16 × 20,614.56
  4. Step 4: Simplify right side
    53,866.56x = 1,665,762,819.13
  5. Step 5: Solve for x
    x = 1,665,762,819.13/53,866.56
  6. Step 6: Final answer
    x = 30,923.88

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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.