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Finding the Fourth Proportional to 221,468.18, 332,255.17 and 71,708.63

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Solution

The fourth proportional to 221,468.18, 332,255.17 and 71,708.63 is: 107,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,468.18 : 332,255.17 = 71,708.63 : x
  2. Step 2: Convert to fraction form
    221,468.18/332,255.17 = 71,708.63/x
  3. Step 3: Cross multiply
    221,468.18x = 332,255.17 × 71,708.63
  4. Step 4: Simplify right side
    221,468.18x = 23,825,561,389.84
  5. Step 5: Solve for x
    x = 23,825,561,389.84/221,468.18
  6. Step 6: Final answer
    x = 107,580.07

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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.