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Finding the Fourth Proportional to 393,325.20, 590,133.60 and 156,837.60

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Solution

The fourth proportional to 393,325.20, 590,133.60 and 156,837.60 is: 235,314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,325.20 : 590,133.60 = 156,837.60 : x
  2. Step 2: Convert to fraction form
    393,325.20/590,133.60 = 156,837.60/x
  3. Step 3: Cross multiply
    393,325.20x = 590,133.60 × 156,837.60
  4. Step 4: Simplify right side
    393,325.20x = 92,555,137,503.36
  5. Step 5: Solve for x
    x = 92,555,137,503.36/393,325.20
  6. Step 6: Final answer
    x = 235,314.54

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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.