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Finding the Fourth Proportional to 352,021.80, 528,032.70 and 331,285.80

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Solution

The fourth proportional to 352,021.80, 528,032.70 and 331,285.80 is: 496,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,021.80 : 528,032.70 = 331,285.80 : x
  2. Step 2: Convert to fraction form
    352,021.80/528,032.70 = 331,285.80/x
  3. Step 3: Cross multiply
    352,021.80x = 528,032.70 × 331,285.80
  4. Step 4: Simplify right side
    352,021.80x = 174,929,735,445.66
  5. Step 5: Solve for x
    x = 174,929,735,445.66/352,021.80
  6. Step 6: Final answer
    x = 496,928.70

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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.