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Finding the Fourth Proportional to 474,615.39, 655,158.20 and 311,334.03

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Solution

The fourth proportional to 474,615.39, 655,158.20 and 311,334.03 is: 429,764.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,615.39 : 655,158.20 = 311,334.03 : x
  2. Step 2: Convert to fraction form
    474,615.39/655,158.20 = 311,334.03/x
  3. Step 3: Cross multiply
    474,615.39x = 655,158.20 × 311,334.03
  4. Step 4: Simplify right side
    474,615.39x = 203,973,041,136.88
  5. Step 5: Solve for x
    x = 203,973,041,136.88/474,615.39
  6. Step 6: Final answer
    x = 429,764.91

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