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Finding the Fourth Proportional to 317,896.79, 476,771.20 and 118,311.17

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Solution

The fourth proportional to 317,896.79, 476,771.20 and 118,311.17 is: 177,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,896.79 : 476,771.20 = 118,311.17 : x
  2. Step 2: Convert to fraction form
    317,896.79/476,771.20 = 118,311.17/x
  3. Step 3: Cross multiply
    317,896.79x = 476,771.20 × 118,311.17
  4. Step 4: Simplify right side
    317,896.79x = 56,407,355,814.67
  5. Step 5: Solve for x
    x = 56,407,355,814.67/317,896.79
  6. Step 6: Final answer
    x = 177,439.21

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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.