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Finding the Fourth Proportional to 287,398.08, 396,661.44 and 166,616.64

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Solution

The fourth proportional to 287,398.08, 396,661.44 and 166,616.64 is: 229,961.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,398.08 : 396,661.44 = 166,616.64 : x
  2. Step 2: Convert to fraction form
    287,398.08/396,661.44 = 166,616.64/x
  3. Step 3: Cross multiply
    287,398.08x = 396,661.44 × 166,616.64
  4. Step 4: Simplify right side
    287,398.08x = 66,090,396,350.36
  5. Step 5: Solve for x
    x = 66,090,396,350.36/287,398.08
  6. Step 6: Final answer
    x = 229,961.16

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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.