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Finding the Fourth Proportional to 188,791.52, 260,537.46 and 103,913.80

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Solution

The fourth proportional to 188,791.52, 260,537.46 and 103,913.80 is: 143,403.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,791.52 : 260,537.46 = 103,913.80 : x
  2. Step 2: Convert to fraction form
    188,791.52/260,537.46 = 103,913.80/x
  3. Step 3: Cross multiply
    188,791.52x = 260,537.46 × 103,913.80
  4. Step 4: Simplify right side
    188,791.52x = 27,073,437,510.95
  5. Step 5: Solve for x
    x = 27,073,437,510.95/188,791.52
  6. Step 6: Final answer
    x = 143,403.89

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1.5x scale

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.