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Finding the Fourth Proportional to 78,828.54, 108,785.78 and 44,841.90

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Solution

The fourth proportional to 78,828.54, 108,785.78 and 44,841.90 is: 61,883.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,828.54 : 108,785.78 = 44,841.90 : x
  2. Step 2: Convert to fraction form
    78,828.54/108,785.78 = 44,841.90/x
  3. Step 3: Cross multiply
    78,828.54x = 108,785.78 × 44,841.90
  4. Step 4: Simplify right side
    78,828.54x = 4,878,160,843.97
  5. Step 5: Solve for x
    x = 4,878,160,843.97/78,828.54
  6. Step 6: Final answer
    x = 61,883.18

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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.