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Finding the Fourth Proportional to 317,750.69, 476,625.65 and 81,093.39

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Solution

The fourth proportional to 317,750.69, 476,625.65 and 81,093.39 is: 121,639.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,750.69 : 476,625.65 = 81,093.39 : x
  2. Step 2: Convert to fraction form
    317,750.69/476,625.65 = 81,093.39/x
  3. Step 3: Cross multiply
    317,750.69x = 476,625.65 × 81,093.39
  4. Step 4: Simplify right side
    317,750.69x = 38,651,191,456.12
  5. Step 5: Solve for x
    x = 38,651,191,456.12/317,750.69
  6. Step 6: Final answer
    x = 121,639.99

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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.