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Finding the Fourth Proportional to 20,365.92, 30,548.92 and 5,574.98

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Solution

The fourth proportional to 20,365.92, 30,548.92 and 5,574.98 is: 8,362.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.92 : 30,548.92 = 5,574.98 : x
  2. Step 2: Convert to fraction form
    20,365.92/30,548.92 = 5,574.98/x
  3. Step 3: Cross multiply
    20,365.92x = 30,548.92 × 5,574.98
  4. Step 4: Simplify right side
    20,365.92x = 170,309,618.02
  5. Step 5: Solve for x
    x = 170,309,618.02/20,365.92
  6. Step 6: Final answer
    x = 8,362.48

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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.