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Finding the Fourth Proportional to 216,965.54, 325,469.72 and 74,792.10

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Solution

The fourth proportional to 216,965.54, 325,469.72 and 74,792.10 is: 112,195.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,965.54 : 325,469.72 = 74,792.10 : x
  2. Step 2: Convert to fraction form
    216,965.54/325,469.72 = 74,792.10/x
  3. Step 3: Cross multiply
    216,965.54x = 325,469.72 × 74,792.10
  4. Step 4: Simplify right side
    216,965.54x = 24,342,563,845.21
  5. Step 5: Solve for x
    x = 24,342,563,845.21/216,965.54
  6. Step 6: Final answer
    x = 112,195.53

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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.