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Finding the Fourth Proportional to 125,622.70, 188,142.45 and 122,706.70

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Solution

The fourth proportional to 125,622.70, 188,142.45 and 122,706.70 is: 183,775.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,622.70 : 188,142.45 = 122,706.70 : x
  2. Step 2: Convert to fraction form
    125,622.70/188,142.45 = 122,706.70/x
  3. Step 3: Cross multiply
    125,622.70x = 188,142.45 × 122,706.70
  4. Step 4: Simplify right side
    125,622.70x = 23,086,339,169.42
  5. Step 5: Solve for x
    x = 23,086,339,169.42/125,622.70
  6. Step 6: Final answer
    x = 183,775.22

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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.