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Finding the Fourth Proportional to 6,917.92, 9,546.96 and 3,774.28

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Solution

The fourth proportional to 6,917.92, 9,546.96 and 3,774.28 is: 5,208.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.92 : 9,546.96 = 3,774.28 : x
  2. Step 2: Convert to fraction form
    6,917.92/9,546.96 = 3,774.28/x
  3. Step 3: Cross multiply
    6,917.92x = 9,546.96 × 3,774.28
  4. Step 4: Simplify right side
    6,917.92x = 36,032,900.19
  5. Step 5: Solve for x
    x = 36,032,900.19/6,917.92
  6. Step 6: Final answer
    x = 5,208.63

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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.