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Finding the Fourth Proportional to 221,813.28, 306,111.96 and 125,049.60

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Solution

The fourth proportional to 221,813.28, 306,111.96 and 125,049.60 is: 172,573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,813.28 : 306,111.96 = 125,049.60 : x
  2. Step 2: Convert to fraction form
    221,813.28/306,111.96 = 125,049.60/x
  3. Step 3: Cross multiply
    221,813.28x = 306,111.96 × 125,049.60
  4. Step 4: Simplify right side
    221,813.28x = 38,279,178,153.22
  5. Step 5: Solve for x
    x = 38,279,178,153.22/221,813.28
  6. Step 6: Final answer
    x = 172,573.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.