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Finding the Fourth Proportional to 352,615.75, 528,960.53 and 115,976.88

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Solution

The fourth proportional to 352,615.75, 528,960.53 and 115,976.88 is: 173,977.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,615.75 : 528,960.53 = 115,976.88 : x
  2. Step 2: Convert to fraction form
    352,615.75/528,960.53 = 115,976.88/x
  3. Step 3: Cross multiply
    352,615.75x = 528,960.53 × 115,976.88
  4. Step 4: Simplify right side
    352,615.75x = 61,347,191,550.12
  5. Step 5: Solve for x
    x = 61,347,191,550.12/352,615.75
  6. Step 6: Final answer
    x = 173,977.46

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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.