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Finding the Fourth Proportional to 28,793.59, 39,719.96 and 19,825.52

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Solution

The fourth proportional to 28,793.59, 39,719.96 and 19,825.52 is: 27,348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.59 : 39,719.96 = 19,825.52 : x
  2. Step 2: Convert to fraction form
    28,793.59/39,719.96 = 19,825.52/x
  3. Step 3: Cross multiply
    28,793.59x = 39,719.96 × 19,825.52
  4. Step 4: Simplify right side
    28,793.59x = 787,468,861.38
  5. Step 5: Solve for x
    x = 787,468,861.38/28,793.59
  6. Step 6: Final answer
    x = 27,348.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.