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Finding the Fourth Proportional to 216,661.28, 325,105.23 and 88,672.57

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Solution

The fourth proportional to 216,661.28, 325,105.23 and 88,672.57 is: 133,055.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,661.28 : 325,105.23 = 88,672.57 : x
  2. Step 2: Convert to fraction form
    216,661.28/325,105.23 = 88,672.57/x
  3. Step 3: Cross multiply
    216,661.28x = 325,105.23 × 88,672.57
  4. Step 4: Simplify right side
    216,661.28x = 28,827,915,451.78
  5. Step 5: Solve for x
    x = 28,827,915,451.78/216,661.28
  6. Step 6: Final answer
    x = 133,055.23

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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.