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Finding the Fourth Proportional to 67,368.36, 100,921.26 and 41,007.72

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Solution

The fourth proportional to 67,368.36, 100,921.26 and 41,007.72 is: 61,431.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,368.36 : 100,921.26 = 41,007.72 : x
  2. Step 2: Convert to fraction form
    67,368.36/100,921.26 = 41,007.72/x
  3. Step 3: Cross multiply
    67,368.36x = 100,921.26 × 41,007.72
  4. Step 4: Simplify right side
    67,368.36x = 4,138,550,772.13
  5. Step 5: Solve for x
    x = 4,138,550,772.13/67,368.36
  6. Step 6: Final answer
    x = 61,431.67

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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.