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Finding the Fourth Proportional to 123,743.62, 170,768.75 and 70,028.62

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Solution

The fourth proportional to 123,743.62, 170,768.75 and 70,028.62 is: 96,640.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,743.62 : 170,768.75 = 70,028.62 : x
  2. Step 2: Convert to fraction form
    123,743.62/170,768.75 = 70,028.62/x
  3. Step 3: Cross multiply
    123,743.62x = 170,768.75 × 70,028.62
  4. Step 4: Simplify right side
    123,743.62x = 11,958,699,901.63
  5. Step 5: Solve for x
    x = 11,958,699,901.63/123,743.62
  6. Step 6: Final answer
    x = 96,640.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.