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Finding the Fourth Proportional to 354,821.40, 532,232.10 and 331,320.60

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Solution

The fourth proportional to 354,821.40, 532,232.10 and 331,320.60 is: 496,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,821.40 : 532,232.10 = 331,320.60 : x
  2. Step 2: Convert to fraction form
    354,821.40/532,232.10 = 331,320.60/x
  3. Step 3: Cross multiply
    354,821.40x = 532,232.10 × 331,320.60
  4. Step 4: Simplify right side
    354,821.40x = 176,339,458,711.26
  5. Step 5: Solve for x
    x = 176,339,458,711.26/354,821.40
  6. Step 6: Final answer
    x = 496,980.90

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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.