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Finding the Fourth Proportional to 11,792.96, 17,650.98 and 8,672.12

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Solution

The fourth proportional to 11,792.96, 17,650.98 and 8,672.12 is: 12,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,792.96 : 17,650.98 = 8,672.12 : x
  2. Step 2: Convert to fraction form
    11,792.96/17,650.98 = 8,672.12/x
  3. Step 3: Cross multiply
    11,792.96x = 17,650.98 × 8,672.12
  4. Step 4: Simplify right side
    11,792.96x = 153,071,416.68
  5. Step 5: Solve for x
    x = 153,071,416.68/11,792.96
  6. Step 6: Final answer
    x = 12,979.90

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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.