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Finding the Fourth Proportional to 70,095.40, 96,733.92 and 39,879.97

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Solution

The fourth proportional to 70,095.40, 96,733.92 and 39,879.97 is: 55,035.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,095.40 : 96,733.92 = 39,879.97 : x
  2. Step 2: Convert to fraction form
    70,095.40/96,733.92 = 39,879.97/x
  3. Step 3: Cross multiply
    70,095.40x = 96,733.92 × 39,879.97
  4. Step 4: Simplify right side
    70,095.40x = 3,857,745,827.58
  5. Step 5: Solve for x
    x = 3,857,745,827.58/70,095.40
  6. Step 6: Final answer
    x = 55,035.65

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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.