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Finding the Fourth Proportional to 203,316.84, 280,544.58 and 127,811.88

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Solution

The fourth proportional to 203,316.84, 280,544.58 and 127,811.88 is: 176,359.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,316.84 : 280,544.58 = 127,811.88 : x
  2. Step 2: Convert to fraction form
    203,316.84/280,544.58 = 127,811.88/x
  3. Step 3: Cross multiply
    203,316.84x = 280,544.58 × 127,811.88
  4. Step 4: Simplify right side
    203,316.84x = 35,856,930,193.61
  5. Step 5: Solve for x
    x = 35,856,930,193.61/203,316.84
  6. Step 6: Final answer
    x = 176,359.86

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Why These Related Problems?

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