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Finding the Fourth Proportional to 7,015.10, 9,722.64 and 6,883.88

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Solution

The fourth proportional to 7,015.10, 9,722.64 and 6,883.88 is: 9,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.10 : 9,722.64 = 6,883.88 : x
  2. Step 2: Convert to fraction form
    7,015.10/9,722.64 = 6,883.88/x
  3. Step 3: Cross multiply
    7,015.10x = 9,722.64 × 6,883.88
  4. Step 4: Simplify right side
    7,015.10x = 66,929,487.04
  5. Step 5: Solve for x
    x = 66,929,487.04/7,015.10
  6. Step 6: Final answer
    x = 9,540.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.