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Finding the Fourth Proportional to 190,218.86, 285,383.84 and 85,013.22

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Solution

The fourth proportional to 190,218.86, 285,383.84 and 85,013.22 is: 127,544.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,218.86 : 285,383.84 = 85,013.22 : x
  2. Step 2: Convert to fraction form
    190,218.86/285,383.84 = 85,013.22/x
  3. Step 3: Cross multiply
    190,218.86x = 285,383.84 × 85,013.22
  4. Step 4: Simplify right side
    190,218.86x = 24,261,399,174.36
  5. Step 5: Solve for x
    x = 24,261,399,174.36/190,218.86
  6. Step 6: Final answer
    x = 127,544.66

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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.