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Finding the Fourth Proportional to 7,213.32, 9,948.62 and 4,974.68

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Solution

The fourth proportional to 7,213.32, 9,948.62 and 4,974.68 is: 6,861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.32 : 9,948.62 = 4,974.68 : x
  2. Step 2: Convert to fraction form
    7,213.32/9,948.62 = 4,974.68/x
  3. Step 3: Cross multiply
    7,213.32x = 9,948.62 × 4,974.68
  4. Step 4: Simplify right side
    7,213.32x = 49,491,200.94
  5. Step 5: Solve for x
    x = 49,491,200.94/7,213.32
  6. Step 6: Final answer
    x = 6,861.08

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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.