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Finding the Fourth Proportional to 221,275.52, 331,915.56 and 55,063.52

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Solution

The fourth proportional to 221,275.52, 331,915.56 and 55,063.52 is: 82,595.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,275.52 : 331,915.56 = 55,063.52 : x
  2. Step 2: Convert to fraction form
    221,275.52/331,915.56 = 55,063.52/x
  3. Step 3: Cross multiply
    221,275.52x = 331,915.56 × 55,063.52
  4. Step 4: Simplify right side
    221,275.52x = 18,276,439,076.37
  5. Step 5: Solve for x
    x = 18,276,439,076.37/221,275.52
  6. Step 6: Final answer
    x = 82,595.85

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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.