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Finding the Fourth Proportional to 111,290.85, 166,740.66 and 92,690.01

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Solution

The fourth proportional to 111,290.85, 166,740.66 and 92,690.01 is: 138,872.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,290.85 : 166,740.66 = 92,690.01 : x
  2. Step 2: Convert to fraction form
    111,290.85/166,740.66 = 92,690.01/x
  3. Step 3: Cross multiply
    111,290.85x = 166,740.66 × 92,690.01
  4. Step 4: Simplify right side
    111,290.85x = 15,455,193,442.81
  5. Step 5: Solve for x
    x = 15,455,193,442.81/111,290.85
  6. Step 6: Final answer
    x = 138,872.09

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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.