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Finding the Fourth Proportional to 79,474.50, 109,674.90 and 43,664.58

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Solution

The fourth proportional to 79,474.50, 109,674.90 and 43,664.58 is: 60,257.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,474.50 : 109,674.90 = 43,664.58 : x
  2. Step 2: Convert to fraction form
    79,474.50/109,674.90 = 43,664.58/x
  3. Step 3: Cross multiply
    79,474.50x = 109,674.90 × 43,664.58
  4. Step 4: Simplify right side
    79,474.50x = 4,788,908,445.04
  5. Step 5: Solve for x
    x = 4,788,908,445.04/79,474.50
  6. Step 6: Final answer
    x = 60,257.17

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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.