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Finding the Fourth Proportional to 73,709.60, 101,719.19 and 40,175.60

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Solution

The fourth proportional to 73,709.60, 101,719.19 and 40,175.60 is: 55,442.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,709.60 : 101,719.19 = 40,175.60 : x
  2. Step 2: Convert to fraction form
    73,709.60/101,719.19 = 40,175.60/x
  3. Step 3: Cross multiply
    73,709.60x = 101,719.19 × 40,175.60
  4. Step 4: Simplify right side
    73,709.60x = 4,086,629,081.61
  5. Step 5: Solve for x
    x = 4,086,629,081.61/73,709.60
  6. Step 6: Final answer
    x = 55,442.29

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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.