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Finding the Fourth Proportional to 57,370.92, 86,004.54 and 20,426.28

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Solution

The fourth proportional to 57,370.92, 86,004.54 and 20,426.28 is: 30,620.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,370.92 : 86,004.54 = 20,426.28 : x
  2. Step 2: Convert to fraction form
    57,370.92/86,004.54 = 20,426.28/x
  3. Step 3: Cross multiply
    57,370.92x = 86,004.54 × 20,426.28
  4. Step 4: Simplify right side
    57,370.92x = 1,756,752,815.31
  5. Step 5: Solve for x
    x = 1,756,752,815.31/57,370.92
  6. Step 6: Final answer
    x = 30,620.96

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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.