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Finding the Fourth Proportional to 6,913.31, 9,540.05 and 4,260.96

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Solution

The fourth proportional to 6,913.31, 9,540.05 and 4,260.96 is: 5,879.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,913.31 : 9,540.05 = 4,260.96 : x
  2. Step 2: Convert to fraction form
    6,913.31/9,540.05 = 4,260.96/x
  3. Step 3: Cross multiply
    6,913.31x = 9,540.05 × 4,260.96
  4. Step 4: Simplify right side
    6,913.31x = 40,649,750.14
  5. Step 5: Solve for x
    x = 40,649,750.14/6,913.31
  6. Step 6: Final answer
    x = 5,879.93

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1.5x scale

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.