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Finding the Fourth Proportional to 7,672.16, 11,508.60 and 2,744.12

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Solution

The fourth proportional to 7,672.16, 11,508.60 and 2,744.12 is: 4,116.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.16 : 11,508.60 = 2,744.12 : x
  2. Step 2: Convert to fraction form
    7,672.16/11,508.60 = 2,744.12/x
  3. Step 3: Cross multiply
    7,672.16x = 11,508.60 × 2,744.12
  4. Step 4: Simplify right side
    7,672.16x = 31,580,979.43
  5. Step 5: Solve for x
    x = 31,580,979.43/7,672.16
  6. Step 6: Final answer
    x = 4,116.31

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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.