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Finding the Fourth Proportional to 64,579.60, 96,696.60 and 41,078.80

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Solution

The fourth proportional to 64,579.60, 96,696.60 and 41,078.80 is: 61,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,579.60 : 96,696.60 = 41,078.80 : x
  2. Step 2: Convert to fraction form
    64,579.60/96,696.60 = 41,078.80/x
  3. Step 3: Cross multiply
    64,579.60x = 96,696.60 × 41,078.80
  4. Step 4: Simplify right side
    64,579.60x = 3,972,180,292.08
  5. Step 5: Solve for x
    x = 3,972,180,292.08/64,579.60
  6. Step 6: Final answer
    x = 61,508.28

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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.