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Finding the Fourth Proportional to 318,997.64, 440,226.69 and 183,056.48

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Solution

The fourth proportional to 318,997.64, 440,226.69 and 183,056.48 is: 252,623.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,997.64 : 440,226.69 = 183,056.48 : x
  2. Step 2: Convert to fraction form
    318,997.64/440,226.69 = 183,056.48/x
  3. Step 3: Cross multiply
    318,997.64x = 440,226.69 × 183,056.48
  4. Step 4: Simplify right side
    318,997.64x = 80,586,348,273.45
  5. Step 5: Solve for x
    x = 80,586,348,273.45/318,997.64
  6. Step 6: Final answer
    x = 252,623.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.