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Finding the Fourth Proportional to 57,385.80, 79,172.64 and 35,860.86

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Solution

The fourth proportional to 57,385.80, 79,172.64 and 35,860.86 is: 49,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,385.80 : 79,172.64 = 35,860.86 : x
  2. Step 2: Convert to fraction form
    57,385.80/79,172.64 = 35,860.86/x
  3. Step 3: Cross multiply
    57,385.80x = 79,172.64 × 35,860.86
  4. Step 4: Simplify right side
    57,385.80x = 2,839,198,958.87
  5. Step 5: Solve for x
    x = 2,839,198,958.87/57,385.80
  6. Step 6: Final answer
    x = 49,475.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.