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Finding the Fourth Proportional to 383,538.39, 575,330.26 and 117,317.31

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Solution

The fourth proportional to 383,538.39, 575,330.26 and 117,317.31 is: 175,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,538.39 : 575,330.26 = 117,317.31 : x
  2. Step 2: Convert to fraction form
    383,538.39/575,330.26 = 117,317.31/x
  3. Step 3: Cross multiply
    383,538.39x = 575,330.26 × 117,317.31
  4. Step 4: Simplify right side
    383,538.39x = 67,496,198,464.80
  5. Step 5: Solve for x
    x = 67,496,198,464.80/383,538.39
  6. Step 6: Final answer
    x = 175,982.90

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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.