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Finding the Fourth Proportional to 354,901.40, 532,352.10 and 331,400.60

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Solution

The fourth proportional to 354,901.40, 532,352.10 and 331,400.60 is: 497,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,901.40 : 532,352.10 = 331,400.60 : x
  2. Step 2: Convert to fraction form
    354,901.40/532,352.10 = 331,400.60/x
  3. Step 3: Cross multiply
    354,901.40x = 532,352.10 × 331,400.60
  4. Step 4: Simplify right side
    354,901.40x = 176,421,805,351.26
  5. Step 5: Solve for x
    x = 176,421,805,351.26/354,901.40
  6. Step 6: Final answer
    x = 497,100.90

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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.