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Finding the Fourth Proportional to 18,491.76, 27,732.24 and 6,011.28

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Solution

The fourth proportional to 18,491.76, 27,732.24 and 6,011.28 is: 9,015.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.76 : 27,732.24 = 6,011.28 : x
  2. Step 2: Convert to fraction form
    18,491.76/27,732.24 = 6,011.28/x
  3. Step 3: Cross multiply
    18,491.76x = 27,732.24 × 6,011.28
  4. Step 4: Simplify right side
    18,491.76x = 166,706,259.67
  5. Step 5: Solve for x
    x = 166,706,259.67/18,491.76
  6. Step 6: Final answer
    x = 9,015.16

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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.