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Finding the Fourth Proportional to 61,222.80, 91,834.20 and 53,446.80

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Solution

The fourth proportional to 61,222.80, 91,834.20 and 53,446.80 is: 80,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,222.80 : 91,834.20 = 53,446.80 : x
  2. Step 2: Convert to fraction form
    61,222.80/91,834.20 = 53,446.80/x
  3. Step 3: Cross multiply
    61,222.80x = 91,834.20 × 53,446.80
  4. Step 4: Simplify right side
    61,222.80x = 4,908,244,120.56
  5. Step 5: Solve for x
    x = 4,908,244,120.56/61,222.80
  6. Step 6: Final answer
    x = 80,170.20

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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.