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Finding the Fourth Proportional to 86,722.64, 119,696.57 and 52,723.94

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Solution

The fourth proportional to 86,722.64, 119,696.57 and 52,723.94 is: 72,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,722.64 : 119,696.57 = 52,723.94 : x
  2. Step 2: Convert to fraction form
    86,722.64/119,696.57 = 52,723.94/x
  3. Step 3: Cross multiply
    86,722.64x = 119,696.57 × 52,723.94
  4. Step 4: Simplify right side
    86,722.64x = 6,310,874,511.27
  5. Step 5: Solve for x
    x = 6,310,874,511.27/86,722.64
  6. Step 6: Final answer
    x = 72,770.78

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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.