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Finding the Fourth Proportional to 493,563.20, 740,417.70 and 156,635.60

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Solution

The fourth proportional to 493,563.20, 740,417.70 and 156,635.60 is: 234,976.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,563.20 : 740,417.70 = 156,635.60 : x
  2. Step 2: Convert to fraction form
    493,563.20/740,417.70 = 156,635.60/x
  3. Step 3: Cross multiply
    493,563.20x = 740,417.70 × 156,635.60
  4. Step 4: Simplify right side
    493,563.20x = 115,975,770,690.12
  5. Step 5: Solve for x
    x = 115,975,770,690.12/493,563.20
  6. Step 6: Final answer
    x = 234,976.54

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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.