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Finding the Fourth Proportional to 71,679.36, 107,337.60 and 52,965.12

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Solution

The fourth proportional to 71,679.36, 107,337.60 and 52,965.12 is: 79,313.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,679.36 : 107,337.60 = 52,965.12 : x
  2. Step 2: Convert to fraction form
    71,679.36/107,337.60 = 52,965.12/x
  3. Step 3: Cross multiply
    71,679.36x = 107,337.60 × 52,965.12
  4. Step 4: Simplify right side
    71,679.36x = 5,685,148,864.51
  5. Step 5: Solve for x
    x = 5,685,148,864.51/71,679.36
  6. Step 6: Final answer
    x = 79,313.61

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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.