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Finding the Fourth Proportional to 190,257.01, 285,398.83 and 76,404.80

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Solution

The fourth proportional to 190,257.01, 285,398.83 and 76,404.80 is: 114,612.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,257.01 : 285,398.83 = 76,404.80 : x
  2. Step 2: Convert to fraction form
    190,257.01/285,398.83 = 76,404.80/x
  3. Step 3: Cross multiply
    190,257.01x = 285,398.83 × 76,404.80
  4. Step 4: Simplify right side
    190,257.01x = 21,805,839,300.24
  5. Step 5: Solve for x
    x = 21,805,839,300.24/190,257.01
  6. Step 6: Final answer
    x = 114,612.54

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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.