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Finding the Fourth Proportional to 287,680.72, 396,930.36 and 185,684.58

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Solution

The fourth proportional to 287,680.72, 396,930.36 and 185,684.58 is: 256,200.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,680.72 : 396,930.36 = 185,684.58 : x
  2. Step 2: Convert to fraction form
    287,680.72/396,930.36 = 185,684.58/x
  3. Step 3: Cross multiply
    287,680.72x = 396,930.36 × 185,684.58
  4. Step 4: Simplify right side
    287,680.72x = 73,703,847,185.85
  5. Step 5: Solve for x
    x = 73,703,847,185.85/287,680.72
  6. Step 6: Final answer
    x = 256,200.16

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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.