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Finding the Fourth Proportional to 68,791.36, 94,931.04 and 38,576.68

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Solution

The fourth proportional to 68,791.36, 94,931.04 and 38,576.68 is: 53,235.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,791.36 : 94,931.04 = 38,576.68 : x
  2. Step 2: Convert to fraction form
    68,791.36/94,931.04 = 38,576.68/x
  3. Step 3: Cross multiply
    68,791.36x = 94,931.04 × 38,576.68
  4. Step 4: Simplify right side
    68,791.36x = 3,662,124,352.15
  5. Step 5: Solve for x
    x = 3,662,124,352.15/68,791.36
  6. Step 6: Final answer
    x = 53,235.24

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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.