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Finding the Fourth Proportional to 287,400.30, 396,612.52 and 166,611.60

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Solution

The fourth proportional to 287,400.30, 396,612.52 and 166,611.60 is: 229,924.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,400.30 : 396,612.52 = 166,611.60 : x
  2. Step 2: Convert to fraction form
    287,400.30/396,612.52 = 166,611.60/x
  3. Step 3: Cross multiply
    287,400.30x = 396,612.52 × 166,611.60
  4. Step 4: Simplify right side
    287,400.30x = 66,080,246,695.71
  5. Step 5: Solve for x
    x = 66,080,246,695.71/287,400.30
  6. Step 6: Final answer
    x = 229,924.07

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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.