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Finding the Fourth Proportional to 79,670.86, 109,946.75 and 43,863.28

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Solution

The fourth proportional to 79,670.86, 109,946.75 and 43,863.28 is: 60,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,670.86 : 109,946.75 = 43,863.28 : x
  2. Step 2: Convert to fraction form
    79,670.86/109,946.75 = 43,863.28/x
  3. Step 3: Cross multiply
    79,670.86x = 109,946.75 × 43,863.28
  4. Step 4: Simplify right side
    79,670.86x = 4,822,624,586.16
  5. Step 5: Solve for x
    x = 4,822,624,586.16/79,670.86
  6. Step 6: Final answer
    x = 60,531.85

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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.