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Finding the Fourth Proportional to 18,595.20, 27,885.48 and 7,499.82

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Solution

The fourth proportional to 18,595.20, 27,885.48 and 7,499.82 is: 11,246.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,595.20 : 27,885.48 = 7,499.82 : x
  2. Step 2: Convert to fraction form
    18,595.20/27,885.48 = 7,499.82/x
  3. Step 3: Cross multiply
    18,595.20x = 27,885.48 × 7,499.82
  4. Step 4: Simplify right side
    18,595.20x = 209,136,080.61
  5. Step 5: Solve for x
    x = 209,136,080.61/18,595.20
  6. Step 6: Final answer
    x = 11,246.78

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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.