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Finding the Fourth Proportional to 221,330.10, 331,951.95 and 73,586.10

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Solution

The fourth proportional to 221,330.10, 331,951.95 and 73,586.10 is: 110,364.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,330.10 : 331,951.95 = 73,586.10 : x
  2. Step 2: Convert to fraction form
    221,330.10/331,951.95 = 73,586.10/x
  3. Step 3: Cross multiply
    221,330.10x = 331,951.95 × 73,586.10
  4. Step 4: Simplify right side
    221,330.10x = 24,427,049,387.90
  5. Step 5: Solve for x
    x = 24,427,049,387.90/221,330.10
  6. Step 6: Final answer
    x = 110,364.79

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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.