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Finding the Fourth Proportional to 64,791.50, 96,967.80 and 39,847.37

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Solution

The fourth proportional to 64,791.50, 96,967.80 and 39,847.37 is: 59,636.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,791.50 : 96,967.80 = 39,847.37 : x
  2. Step 2: Convert to fraction form
    64,791.50/96,967.80 = 39,847.37/x
  3. Step 3: Cross multiply
    64,791.50x = 96,967.80 × 39,847.37
  4. Step 4: Simplify right side
    64,791.50x = 3,863,911,804.69
  5. Step 5: Solve for x
    x = 3,863,911,804.69/64,791.50
  6. Step 6: Final answer
    x = 59,636.09

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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.