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Finding the Fourth Proportional to 18,695.52, 25,799.64 and 10,311.96

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Solution

The fourth proportional to 18,695.52, 25,799.64 and 10,311.96 is: 14,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.52 : 25,799.64 = 10,311.96 : x
  2. Step 2: Convert to fraction form
    18,695.52/25,799.64 = 10,311.96/x
  3. Step 3: Cross multiply
    18,695.52x = 25,799.64 × 10,311.96
  4. Step 4: Simplify right side
    18,695.52x = 266,044,855.69
  5. Step 5: Solve for x
    x = 266,044,855.69/18,695.52
  6. Step 6: Final answer
    x = 14,230.41

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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.