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Finding the Fourth Proportional to 21,672.58, 32,503.20 and 6,086.56

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Solution

The fourth proportional to 21,672.58, 32,503.20 and 6,086.56 is: 9,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.58 : 32,503.20 = 6,086.56 : x
  2. Step 2: Convert to fraction form
    21,672.58/32,503.20 = 6,086.56/x
  3. Step 3: Cross multiply
    21,672.58x = 32,503.20 × 6,086.56
  4. Step 4: Simplify right side
    21,672.58x = 197,832,676.99
  5. Step 5: Solve for x
    x = 197,832,676.99/21,672.58
  6. Step 6: Final answer
    x = 9,128.25

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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.