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Finding the Fourth Proportional to 221,216.60, 331,824.90 and 73,472.60

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Solution

The fourth proportional to 221,216.60, 331,824.90 and 73,472.60 is: 110,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,216.60 : 331,824.90 = 73,472.60 : x
  2. Step 2: Convert to fraction form
    221,216.60/331,824.90 = 73,472.60/x
  3. Step 3: Cross multiply
    221,216.60x = 331,824.90 × 73,472.60
  4. Step 4: Simplify right side
    221,216.60x = 24,380,038,147.74
  5. Step 5: Solve for x
    x = 24,380,038,147.74/221,216.60
  6. Step 6: Final answer
    x = 110,208.90

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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.