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Finding the Fourth Proportional to 20,048.93, 30,080.18 and 7,572.56

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Solution

The fourth proportional to 20,048.93, 30,080.18 and 7,572.56 is: 11,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,048.93 : 30,080.18 = 7,572.56 : x
  2. Step 2: Convert to fraction form
    20,048.93/30,080.18 = 7,572.56/x
  3. Step 3: Cross multiply
    20,048.93x = 30,080.18 × 7,572.56
  4. Step 4: Simplify right side
    20,048.93x = 227,783,836.39
  5. Step 5: Solve for x
    x = 227,783,836.39/20,048.93
  6. Step 6: Final answer
    x = 11,361.40

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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.