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Finding the Fourth Proportional to 29,997.20, 44,991.84 and 7,812.20

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Solution

The fourth proportional to 29,997.20, 44,991.84 and 7,812.20 is: 11,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,997.20 : 44,991.84 = 7,812.20 : x
  2. Step 2: Convert to fraction form
    29,997.20/44,991.84 = 7,812.20/x
  3. Step 3: Cross multiply
    29,997.20x = 44,991.84 × 7,812.20
  4. Step 4: Simplify right side
    29,997.20x = 351,485,252.45
  5. Step 5: Solve for x
    x = 351,485,252.45/29,997.20
  6. Step 6: Final answer
    x = 11,717.27

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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.