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Finding the Fourth Proportional to 8,522.79, 12,785.92 and 3,592.42

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Solution

The fourth proportional to 8,522.79, 12,785.92 and 3,592.42 is: 5,389.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.79 : 12,785.92 = 3,592.42 : x
  2. Step 2: Convert to fraction form
    8,522.79/12,785.92 = 3,592.42/x
  3. Step 3: Cross multiply
    8,522.79x = 12,785.92 × 3,592.42
  4. Step 4: Simplify right side
    8,522.79x = 45,932,435.67
  5. Step 5: Solve for x
    x = 45,932,435.67/8,522.79
  6. Step 6: Final answer
    x = 5,389.36

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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.