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Finding the Fourth Proportional to 216,520.92, 324,781.80 and 83,463.84

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Solution

The fourth proportional to 216,520.92, 324,781.80 and 83,463.84 is: 125,195.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,520.92 : 324,781.80 = 83,463.84 : x
  2. Step 2: Convert to fraction form
    216,520.92/324,781.80 = 83,463.84/x
  3. Step 3: Cross multiply
    216,520.92x = 324,781.80 × 83,463.84
  4. Step 4: Simplify right side
    216,520.92x = 27,107,536,190.11
  5. Step 5: Solve for x
    x = 27,107,536,190.11/216,520.92
  6. Step 6: Final answer
    x = 125,195.92

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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.