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Finding the Fourth Proportional to 221,697.41, 332,579.31 and 71,887.91

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Solution

The fourth proportional to 221,697.41, 332,579.31 and 71,887.91 is: 107,842.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,697.41 : 332,579.31 = 71,887.91 : x
  2. Step 2: Convert to fraction form
    221,697.41/332,579.31 = 71,887.91/x
  3. Step 3: Cross multiply
    221,697.41x = 332,579.31 × 71,887.91
  4. Step 4: Simplify right side
    221,697.41x = 23,908,429,842.25
  5. Step 5: Solve for x
    x = 23,908,429,842.25/221,697.41
  6. Step 6: Final answer
    x = 107,842.62

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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.