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Finding the Fourth Proportional to 111,222.68, 166,834.02 and 28,116.68

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Solution

The fourth proportional to 111,222.68, 166,834.02 and 28,116.68 is: 42,175.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,222.68 : 166,834.02 = 28,116.68 : x
  2. Step 2: Convert to fraction form
    111,222.68/166,834.02 = 28,116.68/x
  3. Step 3: Cross multiply
    111,222.68x = 166,834.02 × 28,116.68
  4. Step 4: Simplify right side
    111,222.68x = 4,690,818,753.45
  5. Step 5: Solve for x
    x = 4,690,818,753.45/111,222.68
  6. Step 6: Final answer
    x = 42,175.02

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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.