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Finding the Fourth Proportional to 317,750.88, 476,626.08 and 81,093.60

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Solution

The fourth proportional to 317,750.88, 476,626.08 and 81,093.60 is: 121,640.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,750.88 : 476,626.08 = 81,093.60 : x
  2. Step 2: Convert to fraction form
    317,750.88/476,626.08 = 81,093.60/x
  3. Step 3: Cross multiply
    317,750.88x = 476,626.08 × 81,093.60
  4. Step 4: Simplify right side
    317,750.88x = 38,651,324,681.09
  5. Step 5: Solve for x
    x = 38,651,324,681.09/317,750.88
  6. Step 6: Final answer
    x = 121,640.34

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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.