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Finding the Fourth Proportional to 79,611.78, 109,868.82 and 43,802.66

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Solution

The fourth proportional to 79,611.78, 109,868.82 and 43,802.66 is: 60,450.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,611.78 : 109,868.82 = 43,802.66 : x
  2. Step 2: Convert to fraction form
    79,611.78/109,868.82 = 43,802.66/x
  3. Step 3: Cross multiply
    79,611.78x = 109,868.82 × 43,802.66
  4. Step 4: Simplify right side
    79,611.78x = 4,812,546,567.06
  5. Step 5: Solve for x
    x = 4,812,546,567.06/79,611.78
  6. Step 6: Final answer
    x = 60,450.18

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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.