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Finding the Fourth Proportional to 18,773.82, 25,905.15 and 12,060

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Solution

The fourth proportional to 18,773.82, 25,905.15 and 12,060 is: 16,641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.82 : 25,905.15 = 12,060 : x
  2. Step 2: Convert to fraction form
    18,773.82/25,905.15 = 12,060/x
  3. Step 3: Cross multiply
    18,773.82x = 25,905.15 × 12,060
  4. Step 4: Simplify right side
    18,773.82x = 312,416,109
  5. Step 5: Solve for x
    x = 312,416,109/18,773.82
  6. Step 6: Final answer
    x = 16,641.05

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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.