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Finding the Fourth Proportional to 11,572.96, 17,360.25 and 5,728

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Solution

The fourth proportional to 11,572.96, 17,360.25 and 5,728 is: 8,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,572.96 : 17,360.25 = 5,728 : x
  2. Step 2: Convert to fraction form
    11,572.96/17,360.25 = 5,728/x
  3. Step 3: Cross multiply
    11,572.96x = 17,360.25 × 5,728
  4. Step 4: Simplify right side
    11,572.96x = 99,439,512
  5. Step 5: Solve for x
    x = 99,439,512/11,572.96
  6. Step 6: Final answer
    x = 8,592.40

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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.