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Finding the Fourth Proportional to 79,716.11, 109,992.11 and 60,590.79

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Solution

The fourth proportional to 79,716.11, 109,992.11 and 60,590.79 is: 83,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,716.11 : 109,992.11 = 60,590.79 : x
  2. Step 2: Convert to fraction form
    79,716.11/109,992.11 = 60,590.79/x
  3. Step 3: Cross multiply
    79,716.11x = 109,992.11 × 60,590.79
  4. Step 4: Simplify right side
    79,716.11x = 6,664,508,535.71
  5. Step 5: Solve for x
    x = 6,664,508,535.71/79,716.11
  6. Step 6: Final answer
    x = 83,603.04

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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.