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Finding the Fourth Proportional to 287,630.64, 396,745.02 and 190,832.40

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Solution

The fourth proportional to 287,630.64, 396,745.02 and 190,832.40 is: 263,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,630.64 : 396,745.02 = 190,832.40 : x
  2. Step 2: Convert to fraction form
    287,630.64/396,745.02 = 190,832.40/x
  3. Step 3: Cross multiply
    287,630.64x = 396,745.02 × 190,832.40
  4. Step 4: Simplify right side
    287,630.64x = 75,711,804,354.65
  5. Step 5: Solve for x
    x = 75,711,804,354.65/287,630.64
  6. Step 6: Final answer
    x = 263,225.80

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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.