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Finding the Fourth Proportional to 139,653.52, 192,725.96 and 75,995.44

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Solution

The fourth proportional to 139,653.52, 192,725.96 and 75,995.44 is: 104,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,653.52 : 192,725.96 = 75,995.44 : x
  2. Step 2: Convert to fraction form
    139,653.52/192,725.96 = 75,995.44/x
  3. Step 3: Cross multiply
    139,653.52x = 192,725.96 × 75,995.44
  4. Step 4: Simplify right side
    139,653.52x = 14,646,294,129.62
  5. Step 5: Solve for x
    x = 14,646,294,129.62/139,653.52
  6. Step 6: Final answer
    x = 104,875.94

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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.