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Finding the Fourth Proportional to 8,612.56, 12,926.92 and 4,233.16

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Solution

The fourth proportional to 8,612.56, 12,926.92 and 4,233.16 is: 6,353.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.56 : 12,926.92 = 4,233.16 : x
  2. Step 2: Convert to fraction form
    8,612.56/12,926.92 = 4,233.16/x
  3. Step 3: Cross multiply
    8,612.56x = 12,926.92 × 4,233.16
  4. Step 4: Simplify right side
    8,612.56x = 54,721,720.67
  5. Step 5: Solve for x
    x = 54,721,720.67/8,612.56
  6. Step 6: Final answer
    x = 6,353.71

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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.