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Finding the Fourth Proportional to 78,383.62, 108,170.57 and 44,391.27

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Solution

The fourth proportional to 78,383.62, 108,170.57 and 44,391.27 is: 61,260.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,383.62 : 108,170.57 = 44,391.27 : x
  2. Step 2: Convert to fraction form
    78,383.62/108,170.57 = 44,391.27/x
  3. Step 3: Cross multiply
    78,383.62x = 108,170.57 × 44,391.27
  4. Step 4: Simplify right side
    78,383.62x = 4,801,828,978.92
  5. Step 5: Solve for x
    x = 4,801,828,978.92/78,383.62
  6. Step 6: Final answer
    x = 61,260.62

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1.5x scale

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.