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Finding the Fourth Proportional to 216,792.56, 325,224.08 and 66,997.91

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Solution

The fourth proportional to 216,792.56, 325,224.08 and 66,997.91 is: 100,507.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,792.56 : 325,224.08 = 66,997.91 : x
  2. Step 2: Convert to fraction form
    216,792.56/325,224.08 = 66,997.91/x
  3. Step 3: Cross multiply
    216,792.56x = 325,224.08 × 66,997.91
  4. Step 4: Simplify right side
    216,792.56x = 21,789,331,680.56
  5. Step 5: Solve for x
    x = 21,789,331,680.56/216,792.56
  6. Step 6: Final answer
    x = 100,507.75

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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.