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Finding the Fourth Proportional to 119,542.91, 164,969.20 and 65,827.79

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Solution

The fourth proportional to 119,542.91, 164,969.20 and 65,827.79 is: 90,842.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,542.91 : 164,969.20 = 65,827.79 : x
  2. Step 2: Convert to fraction form
    119,542.91/164,969.20 = 65,827.79/x
  3. Step 3: Cross multiply
    119,542.91x = 164,969.20 × 65,827.79
  4. Step 4: Simplify right side
    119,542.91x = 10,859,558,101.92
  5. Step 5: Solve for x
    x = 10,859,558,101.92/119,542.91
  6. Step 6: Final answer
    x = 90,842.35

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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.