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Finding the Fourth Proportional to 20,566.45, 30,852.92 and 7,422.04

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Solution

The fourth proportional to 20,566.45, 30,852.92 and 7,422.04 is: 11,134.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.45 : 30,852.92 = 7,422.04 : x
  2. Step 2: Convert to fraction form
    20,566.45/30,852.92 = 7,422.04/x
  3. Step 3: Cross multiply
    20,566.45x = 30,852.92 × 7,422.04
  4. Step 4: Simplify right side
    20,566.45x = 228,991,606.36
  5. Step 5: Solve for x
    x = 228,991,606.36/20,566.45
  6. Step 6: Final answer
    x = 11,134.23

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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.