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Finding the Fourth Proportional to 110,950.62, 166,421.61 and 61,129.50

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Solution

The fourth proportional to 110,950.62, 166,421.61 and 61,129.50 is: 91,691.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,950.62 : 166,421.61 = 61,129.50 : x
  2. Step 2: Convert to fraction form
    110,950.62/166,421.61 = 61,129.50/x
  3. Step 3: Cross multiply
    110,950.62x = 166,421.61 × 61,129.50
  4. Step 4: Simplify right side
    110,950.62x = 10,173,269,808.50
  5. Step 5: Solve for x
    x = 10,173,269,808.50/110,950.62
  6. Step 6: Final answer
    x = 91,691.87

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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.