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Finding the Fourth Proportional to 216,683.16, 325,138.02 and 88,694.40

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Solution

The fourth proportional to 216,683.16, 325,138.02 and 88,694.40 is: 133,087.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,683.16 : 325,138.02 = 88,694.40 : x
  2. Step 2: Convert to fraction form
    216,683.16/325,138.02 = 88,694.40/x
  3. Step 3: Cross multiply
    216,683.16x = 325,138.02 × 88,694.40
  4. Step 4: Simplify right side
    216,683.16x = 28,837,921,601.09
  5. Step 5: Solve for x
    x = 28,837,921,601.09/216,683.16
  6. Step 6: Final answer
    x = 133,087.97

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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.