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Finding the Fourth Proportional to 20,562.58, 30,766.11 and 19,318.42

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Solution

The fourth proportional to 20,562.58, 30,766.11 and 19,318.42 is: 28,904.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.58 : 30,766.11 = 19,318.42 : x
  2. Step 2: Convert to fraction form
    20,562.58/30,766.11 = 19,318.42/x
  3. Step 3: Cross multiply
    20,562.58x = 30,766.11 × 19,318.42
  4. Step 4: Simplify right side
    20,562.58x = 594,352,634.75
  5. Step 5: Solve for x
    x = 594,352,634.75/20,562.58
  6. Step 6: Final answer
    x = 28,904.57

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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.