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Finding the Fourth Proportional to 28,519.48, 42,750.06 and 10,982.44

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Solution

The fourth proportional to 28,519.48, 42,750.06 and 10,982.44 is: 16,462.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.48 : 42,750.06 = 10,982.44 : x
  2. Step 2: Convert to fraction form
    28,519.48/42,750.06 = 10,982.44/x
  3. Step 3: Cross multiply
    28,519.48x = 42,750.06 × 10,982.44
  4. Step 4: Simplify right side
    28,519.48x = 469,499,968.95
  5. Step 5: Solve for x
    x = 469,499,968.95/28,519.48
  6. Step 6: Final answer
    x = 16,462.43

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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.