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Finding the Fourth Proportional to 545,986.90, 818,834.55 and 166,906.90

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Solution

The fourth proportional to 545,986.90, 818,834.55 and 166,906.90 is: 250,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,986.90 : 818,834.55 = 166,906.90 : x
  2. Step 2: Convert to fraction form
    545,986.90/818,834.55 = 166,906.90/x
  3. Step 3: Cross multiply
    545,986.90x = 818,834.55 × 166,906.90
  4. Step 4: Simplify right side
    545,986.90x = 136,669,136,353.40
  5. Step 5: Solve for x
    x = 136,669,136,353.40/545,986.90
  6. Step 6: Final answer
    x = 250,315.78

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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.