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Finding the Fourth Proportional to 7,179.32, 9,910.49 and 6,730.94

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Solution

The fourth proportional to 7,179.32, 9,910.49 and 6,730.94 is: 9,291.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.32 : 9,910.49 = 6,730.94 : x
  2. Step 2: Convert to fraction form
    7,179.32/9,910.49 = 6,730.94/x
  3. Step 3: Cross multiply
    7,179.32x = 9,910.49 × 6,730.94
  4. Step 4: Simplify right side
    7,179.32x = 66,706,913.56
  5. Step 5: Solve for x
    x = 66,706,913.56/7,179.32
  6. Step 6: Final answer
    x = 9,291.54

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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.