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Finding the Fourth Proportional to 318,217.68, 477,534.19 and 118,697.67

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Solution

The fourth proportional to 318,217.68, 477,534.19 and 118,697.67 is: 178,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,217.68 : 477,534.19 = 118,697.67 : x
  2. Step 2: Convert to fraction form
    318,217.68/477,534.19 = 118,697.67/x
  3. Step 3: Cross multiply
    318,217.68x = 477,534.19 × 118,697.67
  4. Step 4: Simplify right side
    318,217.68x = 56,682,195,698.34
  5. Step 5: Solve for x
    x = 56,682,195,698.34/318,217.68
  6. Step 6: Final answer
    x = 178,123.97

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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.