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Finding the Fourth Proportional to 137,184.72, 205,791.64 and 43,668.60

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Solution

The fourth proportional to 137,184.72, 205,791.64 and 43,668.60 is: 65,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,184.72 : 205,791.64 = 43,668.60 : x
  2. Step 2: Convert to fraction form
    137,184.72/205,791.64 = 43,668.60/x
  3. Step 3: Cross multiply
    137,184.72x = 205,791.64 × 43,668.60
  4. Step 4: Simplify right side
    137,184.72x = 8,986,632,810.50
  5. Step 5: Solve for x
    x = 8,986,632,810.50/137,184.72
  6. Step 6: Final answer
    x = 65,507.53

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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.