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Finding the Fourth Proportional to 190,486.72, 285,760.32 and 65,837.44

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Solution

The fourth proportional to 190,486.72, 285,760.32 and 65,837.44 is: 98,766.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,486.72 : 285,760.32 = 65,837.44 : x
  2. Step 2: Convert to fraction form
    190,486.72/285,760.32 = 65,837.44/x
  3. Step 3: Cross multiply
    190,486.72x = 285,760.32 × 65,837.44
  4. Step 4: Simplify right side
    190,486.72x = 18,813,727,922.38
  5. Step 5: Solve for x
    x = 18,813,727,922.38/190,486.72
  6. Step 6: Final answer
    x = 98,766.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.