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Finding the Fourth Proportional to 125,619.30, 188,369.55 and 73,044.90

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Solution

The fourth proportional to 125,619.30, 188,369.55 and 73,044.90 is: 109,532.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,619.30 : 188,369.55 = 73,044.90 : x
  2. Step 2: Convert to fraction form
    125,619.30/188,369.55 = 73,044.90/x
  3. Step 3: Cross multiply
    125,619.30x = 188,369.55 × 73,044.90
  4. Step 4: Simplify right side
    125,619.30x = 13,759,434,942.80
  5. Step 5: Solve for x
    x = 13,759,434,942.80/125,619.30
  6. Step 6: Final answer
    x = 109,532.81

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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.