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Finding the Fourth Proportional to 221,223.96, 331,836.18 and 55,011.96

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Solution

The fourth proportional to 221,223.96, 331,836.18 and 55,011.96 is: 82,518.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,223.96 : 331,836.18 = 55,011.96 : x
  2. Step 2: Convert to fraction form
    221,223.96/331,836.18 = 55,011.96/x
  3. Step 3: Cross multiply
    221,223.96x = 331,836.18 × 55,011.96
  4. Step 4: Simplify right side
    221,223.96x = 18,254,958,660.71
  5. Step 5: Solve for x
    x = 18,254,958,660.71/221,223.96
  6. Step 6: Final answer
    x = 82,518.00

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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.