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Finding the Fourth Proportional to 7,274.96, 10,884.60 and 7,256.40

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Solution

The fourth proportional to 7,274.96, 10,884.60 and 7,256.40 is: 10,856.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,274.96 : 10,884.60 = 7,256.40 : x
  2. Step 2: Convert to fraction form
    7,274.96/10,884.60 = 7,256.40/x
  3. Step 3: Cross multiply
    7,274.96x = 10,884.60 × 7,256.40
  4. Step 4: Simplify right side
    7,274.96x = 78,983,011.44
  5. Step 5: Solve for x
    x = 78,983,011.44/7,274.96
  6. Step 6: Final answer
    x = 10,856.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.