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Finding the Fourth Proportional to 119,406.55, 178,965.63 and 52,771.09

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Solution

The fourth proportional to 119,406.55, 178,965.63 and 52,771.09 is: 79,092.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,406.55 : 178,965.63 = 52,771.09 : x
  2. Step 2: Convert to fraction form
    119,406.55/178,965.63 = 52,771.09/x
  3. Step 3: Cross multiply
    119,406.55x = 178,965.63 × 52,771.09
  4. Step 4: Simplify right side
    119,406.55x = 9,444,211,367.64
  5. Step 5: Solve for x
    x = 9,444,211,367.64/119,406.55
  6. Step 6: Final answer
    x = 79,092.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.