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Finding the Fourth Proportional to 190,108.80, 285,163.20 and 96,796.80

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Solution

The fourth proportional to 190,108.80, 285,163.20 and 96,796.80 is: 145,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,108.80 : 285,163.20 = 96,796.80 : x
  2. Step 2: Convert to fraction form
    190,108.80/285,163.20 = 96,796.80/x
  3. Step 3: Cross multiply
    190,108.80x = 285,163.20 × 96,796.80
  4. Step 4: Simplify right side
    190,108.80x = 27,602,885,237.76
  5. Step 5: Solve for x
    x = 27,602,885,237.76/190,108.80
  6. Step 6: Final answer
    x = 145,195.20

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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.