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Finding the Fourth Proportional to 111,420.80, 166,985.40 and 44,806.40

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Solution

The fourth proportional to 111,420.80, 166,985.40 and 44,806.40 is: 67,150.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,420.80 : 166,985.40 = 44,806.40 : x
  2. Step 2: Convert to fraction form
    111,420.80/166,985.40 = 44,806.40/x
  3. Step 3: Cross multiply
    111,420.80x = 166,985.40 × 44,806.40
  4. Step 4: Simplify right side
    111,420.80x = 7,482,014,626.56
  5. Step 5: Solve for x
    x = 7,482,014,626.56/111,420.80
  6. Step 6: Final answer
    x = 67,150.97

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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.