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Finding the Fourth Proportional to 28,524.60, 42,793.56 and 9,803.88

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Solution

The fourth proportional to 28,524.60, 42,793.56 and 9,803.88 is: 14,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,524.60 : 42,793.56 = 9,803.88 : x
  2. Step 2: Convert to fraction form
    28,524.60/42,793.56 = 9,803.88/x
  3. Step 3: Cross multiply
    28,524.60x = 42,793.56 × 9,803.88
  4. Step 4: Simplify right side
    28,524.60x = 419,542,927.01
  5. Step 5: Solve for x
    x = 419,542,927.01/28,524.60
  6. Step 6: Final answer
    x = 14,708.11

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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.