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Finding the Fourth Proportional to 18,459.51, 27,682.43 and 7,362.87

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Solution

The fourth proportional to 18,459.51, 27,682.43 and 7,362.87 is: 11,041.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,459.51 : 27,682.43 = 7,362.87 : x
  2. Step 2: Convert to fraction form
    18,459.51/27,682.43 = 7,362.87/x
  3. Step 3: Cross multiply
    18,459.51x = 27,682.43 × 7,362.87
  4. Step 4: Simplify right side
    18,459.51x = 203,822,096.56
  5. Step 5: Solve for x
    x = 203,822,096.56/18,459.51
  6. Step 6: Final answer
    x = 11,041.58

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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.