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Finding the Fourth Proportional to 5,043.80, 6,960.30 and 3,179

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Solution

The fourth proportional to 5,043.80, 6,960.30 and 3,179 is: 4,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,043.80 : 6,960.30 = 3,179 : x
  2. Step 2: Convert to fraction form
    5,043.80/6,960.30 = 3,179/x
  3. Step 3: Cross multiply
    5,043.80x = 6,960.30 × 3,179
  4. Step 4: Simplify right side
    5,043.80x = 22,126,793.70
  5. Step 5: Solve for x
    x = 22,126,793.70/5,043.80
  6. Step 6: Final answer
    x = 4,386.93

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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.