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Finding the Fourth Proportional to 111,808.46, 167,790.46 and 72,267.50

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Solution

The fourth proportional to 111,808.46, 167,790.46 and 72,267.50 is: 108,451.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,808.46 : 167,790.46 = 72,267.50 : x
  2. Step 2: Convert to fraction form
    111,808.46/167,790.46 = 72,267.50/x
  3. Step 3: Cross multiply
    111,808.46x = 167,790.46 × 72,267.50
  4. Step 4: Simplify right side
    111,808.46x = 12,125,797,068.05
  5. Step 5: Solve for x
    x = 12,125,797,068.05/111,808.46
  6. Step 6: Final answer
    x = 108,451.52

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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.