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Finding the Fourth Proportional to 139,557.94, 192,590.87 and 75,896.19

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Solution

The fourth proportional to 139,557.94, 192,590.87 and 75,896.19 is: 104,737.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,557.94 : 192,590.87 = 75,896.19 : x
  2. Step 2: Convert to fraction form
    139,557.94/192,590.87 = 75,896.19/x
  3. Step 3: Cross multiply
    139,557.94x = 192,590.87 × 75,896.19
  4. Step 4: Simplify right side
    139,557.94x = 14,616,912,882.30
  5. Step 5: Solve for x
    x = 14,616,912,882.30/139,557.94
  6. Step 6: Final answer
    x = 104,737.24

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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.