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Finding the Fourth Proportional to 287,540.70, 396,807.73 and 166,753.60

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Solution

The fourth proportional to 287,540.70, 396,807.73 and 166,753.60 is: 230,120.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,540.70 : 396,807.73 = 166,753.60 : x
  2. Step 2: Convert to fraction form
    287,540.70/396,807.73 = 166,753.60/x
  3. Step 3: Cross multiply
    287,540.70x = 396,807.73 × 166,753.60
  4. Step 4: Simplify right side
    287,540.70x = 66,169,115,501.29
  5. Step 5: Solve for x
    x = 66,169,115,501.29/287,540.70
  6. Step 6: Final answer
    x = 230,120.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.