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Finding the Fourth Proportional to 11,192.90, 16,752.90 and 8,981.60

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Solution

The fourth proportional to 11,192.90, 16,752.90 and 8,981.60 is: 13,443.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,192.90 : 16,752.90 = 8,981.60 : x
  2. Step 2: Convert to fraction form
    11,192.90/16,752.90 = 8,981.60/x
  3. Step 3: Cross multiply
    11,192.90x = 16,752.90 × 8,981.60
  4. Step 4: Simplify right side
    11,192.90x = 150,467,846.64
  5. Step 5: Solve for x
    x = 150,467,846.64/11,192.90
  6. Step 6: Final answer
    x = 13,443.15

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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.