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Finding the Fourth Proportional to 318,989.12, 440,214.96 and 183,047.96

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Solution

The fourth proportional to 318,989.12, 440,214.96 and 183,047.96 is: 252,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,989.12 : 440,214.96 = 183,047.96 : x
  2. Step 2: Convert to fraction form
    318,989.12/440,214.96 = 183,047.96/x
  3. Step 3: Cross multiply
    318,989.12x = 440,214.96 × 183,047.96
  4. Step 4: Simplify right side
    318,989.12x = 80,580,450,389.48
  5. Step 5: Solve for x
    x = 80,580,450,389.48/318,989.12
  6. Step 6: Final answer
    x = 252,611.91

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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.