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Finding the Fourth Proportional to 79,705.17, 109,992.30 and 43,894.43

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Solution

The fourth proportional to 79,705.17, 109,992.30 and 43,894.43 is: 60,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,705.17 : 109,992.30 = 43,894.43 : x
  2. Step 2: Convert to fraction form
    79,705.17/109,992.30 = 43,894.43/x
  3. Step 3: Cross multiply
    79,705.17x = 109,992.30 × 43,894.43
  4. Step 4: Simplify right side
    79,705.17x = 4,828,048,762.93
  5. Step 5: Solve for x
    x = 4,828,048,762.93/79,705.17
  6. Step 6: Final answer
    x = 60,573.85

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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.