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Finding the Fourth Proportional to 18,383.17, 27,583.86 and 7,289.62

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Solution

The fourth proportional to 18,383.17, 27,583.86 and 7,289.62 is: 10,938.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.17 : 27,583.86 = 7,289.62 : x
  2. Step 2: Convert to fraction form
    18,383.17/27,583.86 = 7,289.62/x
  3. Step 3: Cross multiply
    18,383.17x = 27,583.86 × 7,289.62
  4. Step 4: Simplify right side
    18,383.17x = 201,075,719.61
  5. Step 5: Solve for x
    x = 201,075,719.61/18,383.17
  6. Step 6: Final answer
    x = 10,938.04

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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.