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Finding the Fourth Proportional to 111,424.30, 166,990.65 and 44,809.90

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Solution

The fourth proportional to 111,424.30, 166,990.65 and 44,809.90 is: 67,156.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,424.30 : 166,990.65 = 44,809.90 : x
  2. Step 2: Convert to fraction form
    111,424.30/166,990.65 = 44,809.90/x
  3. Step 3: Cross multiply
    111,424.30x = 166,990.65 × 44,809.90
  4. Step 4: Simplify right side
    111,424.30x = 7,482,834,327.44
  5. Step 5: Solve for x
    x = 7,482,834,327.44/111,424.30
  6. Step 6: Final answer
    x = 67,156.22

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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.