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Finding the Fourth Proportional to 55,697.80, 83,546.70 and 53,105.80

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Solution

The fourth proportional to 55,697.80, 83,546.70 and 53,105.80 is: 79,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,697.80 : 83,546.70 = 53,105.80 : x
  2. Step 2: Convert to fraction form
    55,697.80/83,546.70 = 53,105.80/x
  3. Step 3: Cross multiply
    55,697.80x = 83,546.70 × 53,105.80
  4. Step 4: Simplify right side
    55,697.80x = 4,436,814,340.86
  5. Step 5: Solve for x
    x = 4,436,814,340.86/55,697.80
  6. Step 6: Final answer
    x = 79,658.70

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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.