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Finding the Fourth Proportional to 216,811.98, 325,137.17 and 74,617.50

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Solution

The fourth proportional to 216,811.98, 325,137.17 and 74,617.50 is: 111,898.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,811.98 : 325,137.17 = 74,617.50 : x
  2. Step 2: Convert to fraction form
    216,811.98/325,137.17 = 74,617.50/x
  3. Step 3: Cross multiply
    216,811.98x = 325,137.17 × 74,617.50
  4. Step 4: Simplify right side
    216,811.98x = 24,260,922,409.39
  5. Step 5: Solve for x
    x = 24,260,922,409.39/216,811.98
  6. Step 6: Final answer
    x = 111,898.44

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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.