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Finding the Fourth Proportional to 111,235.98, 166,858.08 and 57,186.20

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Solution

The fourth proportional to 111,235.98, 166,858.08 and 57,186.20 is: 85,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,235.98 : 166,858.08 = 57,186.20 : x
  2. Step 2: Convert to fraction form
    111,235.98/166,858.08 = 57,186.20/x
  3. Step 3: Cross multiply
    111,235.98x = 166,858.08 × 57,186.20
  4. Step 4: Simplify right side
    111,235.98x = 9,541,979,737.19
  5. Step 5: Solve for x
    x = 9,541,979,737.19/111,235.98
  6. Step 6: Final answer
    x = 85,781.41

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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.