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Finding the Fourth Proportional to 35,500.69, 48,982.21 and 21,699.54

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Solution

The fourth proportional to 35,500.69, 48,982.21 and 21,699.54 is: 29,940.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,500.69 : 48,982.21 = 21,699.54 : x
  2. Step 2: Convert to fraction form
    35,500.69/48,982.21 = 21,699.54/x
  3. Step 3: Cross multiply
    35,500.69x = 48,982.21 × 21,699.54
  4. Step 4: Simplify right side
    35,500.69x = 1,062,891,425.18
  5. Step 5: Solve for x
    x = 1,062,891,425.18/35,500.69
  6. Step 6: Final answer
    x = 29,940.02

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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.