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Finding the Fourth Proportional to 125,622.54, 188,636.79 and 82,996.55

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Solution

The fourth proportional to 125,622.54, 188,636.79 and 82,996.55 is: 124,628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,622.54 : 188,636.79 = 82,996.55 : x
  2. Step 2: Convert to fraction form
    125,622.54/188,636.79 = 82,996.55/x
  3. Step 3: Cross multiply
    125,622.54x = 188,636.79 × 82,996.55
  4. Step 4: Simplify right side
    125,622.54x = 15,656,201,829.89
  5. Step 5: Solve for x
    x = 15,656,201,829.89/125,622.54
  6. Step 6: Final answer
    x = 124,628.92

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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.