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Finding the Fourth Proportional to 79,588.93, 109,830.41 and 43,778.94

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Solution

The fourth proportional to 79,588.93, 109,830.41 and 43,778.94 is: 60,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,588.93 : 109,830.41 = 43,778.94 : x
  2. Step 2: Convert to fraction form
    79,588.93/109,830.41 = 43,778.94/x
  3. Step 3: Cross multiply
    79,588.93x = 109,830.41 × 43,778.94
  4. Step 4: Simplify right side
    79,588.93x = 4,808,258,929.57
  5. Step 5: Solve for x
    x = 4,808,258,929.57/79,588.93
  6. Step 6: Final answer
    x = 60,413.66

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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.