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Finding the Fourth Proportional to 398,766.78, 597,633.50 and 161,980.30

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Solution

The fourth proportional to 398,766.78, 597,633.50 and 161,980.30 is: 242,760.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,766.78 : 597,633.50 = 161,980.30 : x
  2. Step 2: Convert to fraction form
    398,766.78/597,633.50 = 161,980.30/x
  3. Step 3: Cross multiply
    398,766.78x = 597,633.50 × 161,980.30
  4. Step 4: Simplify right side
    398,766.78x = 96,804,853,620.05
  5. Step 5: Solve for x
    x = 96,804,853,620.05/398,766.78
  6. Step 6: Final answer
    x = 242,760.58

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1.5x scale

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.