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Finding the Fourth Proportional to 24,289.28, 36,439.04 and 7,872

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Solution

The fourth proportional to 24,289.28, 36,439.04 and 7,872 is: 11,809.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,289.28 : 36,439.04 = 7,872 : x
  2. Step 2: Convert to fraction form
    24,289.28/36,439.04 = 7,872/x
  3. Step 3: Cross multiply
    24,289.28x = 36,439.04 × 7,872
  4. Step 4: Simplify right side
    24,289.28x = 286,848,122.88
  5. Step 5: Solve for x
    x = 286,848,122.88/24,289.28
  6. Step 6: Final answer
    x = 11,809.66

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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.