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Finding the Fourth Proportional to 78,926.12, 108,917.68 and 44,936

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Solution

The fourth proportional to 78,926.12, 108,917.68 and 44,936 is: 62,011.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,926.12 : 108,917.68 = 44,936 : x
  2. Step 2: Convert to fraction form
    78,926.12/108,917.68 = 44,936/x
  3. Step 3: Cross multiply
    78,926.12x = 108,917.68 × 44,936
  4. Step 4: Simplify right side
    78,926.12x = 4,894,324,868.48
  5. Step 5: Solve for x
    x = 4,894,324,868.48/78,926.12
  6. Step 6: Final answer
    x = 62,011.47

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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.