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Finding the Fourth Proportional to 21,770.10, 32,658.03 and 6,974.10

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Solution

The fourth proportional to 21,770.10, 32,658.03 and 6,974.10 is: 10,462.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.10 : 32,658.03 = 6,974.10 : x
  2. Step 2: Convert to fraction form
    21,770.10/32,658.03 = 6,974.10/x
  3. Step 3: Cross multiply
    21,770.10x = 32,658.03 × 6,974.10
  4. Step 4: Simplify right side
    21,770.10x = 227,760,367.02
  5. Step 5: Solve for x
    x = 227,760,367.02/21,770.10
  6. Step 6: Final answer
    x = 10,462.07

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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.