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Finding the Fourth Proportional to 28,792.16, 43,188.16 and 9,072.48

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Solution

The fourth proportional to 28,792.16, 43,188.16 and 9,072.48 is: 13,608.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,792.16 : 43,188.16 = 9,072.48 : x
  2. Step 2: Convert to fraction form
    28,792.16/43,188.16 = 9,072.48/x
  3. Step 3: Cross multiply
    28,792.16x = 43,188.16 × 9,072.48
  4. Step 4: Simplify right side
    28,792.16x = 391,823,717.84
  5. Step 5: Solve for x
    x = 391,823,717.84/28,792.16
  6. Step 6: Final answer
    x = 13,608.69

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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.