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Finding the Fourth Proportional to 355,338.40, 533,007.60 and 331,837.60

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Solution

The fourth proportional to 355,338.40, 533,007.60 and 331,837.60 is: 497,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,338.40 : 533,007.60 = 331,837.60 : x
  2. Step 2: Convert to fraction form
    355,338.40/533,007.60 = 331,837.60/x
  3. Step 3: Cross multiply
    355,338.40x = 533,007.60 × 331,837.60
  4. Step 4: Simplify right side
    355,338.40x = 176,871,962,765.76
  5. Step 5: Solve for x
    x = 176,871,962,765.76/355,338.40
  6. Step 6: Final answer
    x = 497,756.40

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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.