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Finding the Fourth Proportional to 10,957.96, 15,120.90 and 6,241.96

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Solution

The fourth proportional to 10,957.96, 15,120.90 and 6,241.96 is: 8,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,957.96 : 15,120.90 = 6,241.96 : x
  2. Step 2: Convert to fraction form
    10,957.96/15,120.90 = 6,241.96/x
  3. Step 3: Cross multiply
    10,957.96x = 15,120.90 × 6,241.96
  4. Step 4: Simplify right side
    10,957.96x = 94,384,052.96
  5. Step 5: Solve for x
    x = 94,384,052.96/10,957.96
  6. Step 6: Final answer
    x = 8,613.29

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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.