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Finding the Fourth Proportional to 119,383.52, 164,745.79 and 65,668.53

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Solution

The fourth proportional to 119,383.52, 164,745.79 and 65,668.53 is: 90,620.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,383.52 : 164,745.79 = 65,668.53 : x
  2. Step 2: Convert to fraction form
    119,383.52/164,745.79 = 65,668.53/x
  3. Step 3: Cross multiply
    119,383.52x = 164,745.79 × 65,668.53
  4. Step 4: Simplify right side
    119,383.52x = 10,818,613,852.99
  5. Step 5: Solve for x
    x = 10,818,613,852.99/119,383.52
  6. Step 6: Final answer
    x = 90,620.66

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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.