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Finding the Fourth Proportional to 18,419.56, 27,657.04 and 11,056.96

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Solution

The fourth proportional to 18,419.56, 27,657.04 and 11,056.96 is: 16,602.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.56 : 27,657.04 = 11,056.96 : x
  2. Step 2: Convert to fraction form
    18,419.56/27,657.04 = 11,056.96/x
  3. Step 3: Cross multiply
    18,419.56x = 27,657.04 × 11,056.96
  4. Step 4: Simplify right side
    18,419.56x = 305,802,785.00
  5. Step 5: Solve for x
    x = 305,802,785.00/18,419.56
  6. Step 6: Final answer
    x = 16,602.07

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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.